ㅤㅤ
Spanish from Chinese 48 units (2023-Feb-14):
NOT CEFR aligned
406 levels ㅤ1802 lessons ㅤ40 Stories
Path image ㅤ Hints ㅤ Words
numberOfSentences=30135 ㅤ numberOfWords=2140 ㅤ JSON
Units 41 to 48 are personalized, with alternative names.
Unit 1 学习简单词汇 (Guidebook)
4, 4, 4, Chest, Story, 1 = Goal
基础 1, 常用语, 基础 1, Chest, The Passport, Review
Unit 2 使用简单短语 (Guidebook)
5, 4, 4, Chest, 4, Story, 6, 5, Chest, 5, 1 = Goal
基础 2, Practice, 常用语, Chest, 基础 1, Doctor Eddy, 食物, 基础 2, Chest, Practice, Review
Unit 3 学习动物的词汇 (Guidebook)
4, Story, 5, Chest, 6, 5, Chest, 5, Story, 1 = Goal
常用语, A New Coat, 动物, Chest, 食物, 基础 2, Chest, Practice, The New Student, Review
Unit 4 使用复数形式 (Guidebook)
2, 5, Chest, 6, Story, 4, 3, Chest, 2, 1 = Goal
复数, 动物, Chest, 食物, Junior's Question, Practice, 物主形容词, Chest, 复数, Review
Unit 5 浅谈服装与配饰 (Guidebook)
5, Story, 3, Chest, 5, 3, Chest, 2, Story, 1 = Goal
动物, To the Station!, 着装, Chest, Practice, 物主形容词, Chest, 复数, The Vegetarian, Review
Unit 6 提问 (Guidebook)
3, 3, Chest, 5, 3, Story, 4, Chest, 3, 1 = Goal
问题, 着装, Chest, Practice, 物主形容词, Vacation Clothes, 一般现在时 1, Chest, 问题, Review
Unit 7 形容不同东西的颜色 (Guidebook)
3, 5, Story, 2, Chest, 4, 3, Chest, Story, 4, 1 = Goal
着装, Practice, The Reservation, 颜色, Chest, 一般现在时 1, 问题, Chest, What Do You Want?, Practice, Review
Unit 8 组成复杂的句子 (Guidebook)
3, 2, Chest, 4, Story, 3, 5, Chest, 3, 1 = Goal
连接词, 颜色, Chest, 一般现在时 1, Can I Have It?, 家人, Practice, Chest, 连接词, Review
Unit 9 陈述事实 (Guidebook)
2, Story, 4, Chest, 4, 3, Chest, 3, Story, 1 = Goal
颜色, Find My Girlfriend, 前置词, Chest, Practice, 家人, Chest, 连接词, The Basketball Player, Review
Unit 10 表达日期、星期和月份 (Guidebook)
8, 4, Chest, 4, 3, Story, 7, Chest, 4, 1 = Goal
日期和时间, Practice, Chest, 前置词, 家人, Two Tickets Please!, 家居用品, Chest, Practice, Review
Unit 11 形容东西的尺寸 (Guidebook)
8, 4, Story, Chest, 2, 4, 7, Chest, 8, Story, 1 = Goal
日期和时间, 前置词, Thanks?, Chest, 尺寸, Practice, 家居用品, Chest, 日期和时间, The Dance Class, Review
Unit 12 描述不同职业 (Guidebook)
7, 4, Chest, 2, 7, Story, 10, Chest, 4, 1 = Goal
职业, Practice, Chest, 尺寸, 家居用品, You're Not Mary, 形容词 1, Chest, Practice, Review
Unit 13 描述当下的行为 (Guidebook)
7, 2, Story, 8, Chest, 4, 10, Chest, 7, Story, 1 = Goal
职业, 尺寸, Family Dinner, 一般现在时 2, Chest, Practice, 形容词 1, Chest, 职业, Junior's Exercise, Review
Unit 14 在句子中使用限定词 (Guidebook)
4, 4, Chest, 8, 10, Story, 11, Chest, 4, 1 = Goal
限定词, Practice, Chest, 一般现在时 2, 形容词 1, The Garden, 副词, Chest, Practice, Review
Unit 15 讨论物品 (Guidebook)
4, 8, Chest, Story, 10, 4, 11, Chest, 4, Story, 1 = Goal
限定词, 一般现在时 2, Chest, The Perfect Person, 物品, Practice, 副词, Chest, 限定词, Need Help?, Review
Unit 16 描述事物与事物的状态 (Guidebook)
3, 4, Chest, 10, 11, Story, 10, Chest, 4, 1 = Goal
ser与estar, Practice, Chest, 物品, 副词, Junior's Choice, 地点, Chest, Practice, Review
Unit 17 描述你认识的人 (Guidebook)
3, 10, Story, Chest, 5, 4, 10, Chest, 3, Story, 1 = Goal
ser与estar, 物品, I Really Want a Dog, Chest, 人物, Practice, 地点, Chest, ser与estar, The Model, Review
Unit 18 使用宾格代词 (Guidebook)
6, 4, Chest, 5, 10, Story, 6, Chest, 4, 1 = Goal
宾格代词, Practice, Chest, 人物, 地点, Bad Painting, 数字, Chest, Practice, Review
Unit 19 描述过去的事 (Guidebook)
6, 5, Story, 11, Chest, 4, 6, Chest, 6, Story, 1 = Goal
宾格代词, 人物, Take My Photo, 简单过去时, Chest, Practice, 数字, Chest, 宾格代词, A New Sport, Review
Unit 20 描述现在的事 (Guidebook)
11, 4, 11, Chest, Story, 6, 11, 4, Chest, Story, 1 = Goal
一般现在时 3, Practice, 简单过去时, Chest, Lucy and the Dinosaurs, 数字, 原形动词 1, Practice, Chest, Where Are My Keys?, Review
Unit 21 描述将要发生的事 (Guidebook)
11, 11, Story, Chest, 3, 11, Chest, 11, Story, 1 = Goal
一般现在时 3, 简单过去时, Dirty Apartment, Chest, Practice, ir a 表示将来, Chest, 原形动词 1, The Monkeys, Review
Unit 22 介绍自己的国籍和国家 (Guidebook)
11, 4, 5, Story, Chest, 11, 11, 4, Chest, Story, 1 = Goal
一般现在时 3, Practice, 国家, Good Art, Chest, ir a 表示将来, 原形动词 1, Practice, Chest, The Waiter Is Right, Review
Unit 23 形容更多人事物 (Guidebook)
11, 5, Story, Chest, 3, 11, Chest, 4, Story, 1 = Goal
形容词 2, 国家, I Feel Sick, Chest, Practice, ir a 表示将来, Chest, 代词, I Want a Pizza, Review
Unit 24 描述方向和位置 (Guidebook)
11, 4, Chest, 5, Story, 4, 4, 4, Chest, Story, 1 = Goal
形容词 2, Practice, Chest, 国家, The Diary, 方向, 代词, Practice, Chest, Oscar's Flowers, Review
Unit 25 聊聊学习和教育 (Guidebook)
11, 5, Story, Chest, 3, 4, Chest, 4, Story, 1 = Goal
形容词 2, 教育, Always Late, Chest, Practice, 方向, Chest, 代词, Day Off, Review
Unit 26 使用抽象名词 (Guidebook)
11, 4, Chest, 5, 4, 3, 4, Chest, 11, 1 = Goal
抽象名词 1, Practice, Chest, 教育, 方向, 过去分词, Practice, Chest, 抽象名词 1, Review
Unit 27 表达情感和感受 (Guidebook)
5, 4, 4, Chest, 3, 11, Chest, 11, 4, 1 = Goal
教育, 情感, Practice, Chest, 过去分词, 抽象名词 1, Chest, 现在完成时, Practice, Review
Unit 28 谈论过去已经发生的事 (Guidebook)
4, 3, 6, 4, Chest, 11, 4, 8, Chest, 4, 1 = Goal
过去完成时, 现在完成时, 抽象名词 2, Chest, Practice, 自然, 过去完成时, Chest, 原形动词 2, Practice, Review
Unit 29 表达抽象概念 (Guidebook)
6, 11, 9, Chest, 4, 8, 6, Chest, 11, 4, 1 = Goal
过去完成时, 现在完成时, 抽象名词 2, Chest, Practice, 自然, 过去完成时, Chest, 原形动词 2, Practice, Review
Unit 30 聊聊运动 (Guidebook)
9, 8, Chest, 3, 4, 11, 9, 10, Chest, 4, 1 = Goal
抽象名词 2, 自然, Chest, 运动, Practice, 原形动词 2, 抽象名词 2, 医学, Chest, Practice, Review
Unit 31 讲述正在进行的活动 (Guidebook)
3, 11, 5, 4, Chest, 10, 3, Chest, 6, 4, 1 = Goal
运动, 原形动词 2, 副动词, Practice, Chest, 医学, 运动, Chest, 商务, Practice, Review
Unit 32 与人聊天交流 (Guidebook)
5, 10, 4, Chest, 4, 6, 5, 2, Chest, 4, 1 = Goal
副动词, 医学, 交流, Chest, Practice, 商务, 副动词, 动词 haber, Chest, Practice, Review
Unit 33 聊聊宗教信仰 (Guidebook)
4, 6, Chest, 3, 4, 2, 4, Chest, 7, 4, 1 = Goal
交流, 商务, Chest, 宗教信仰, Practice, 动词 haber, 交流, Chest, 将来未完成时, Practice, Review
Unit 34 交流艺术爱好 (Guidebook)
3, 2, 6, 4, Chest, 7, 3, 3, Chest, 4, 1 = Goal
宗教信仰, 动词 haber, 艺术, Practice, Chest, 将来未完成时, 宗教信仰, 将来完成时, Chest, Practice, Review
Unit 35 讨论政治相关话题 (Guidebook)
6, 7, 11, Chest, 4, 3, 6, Chest, 4, 4, 1 = Goal
艺术, 将来未完成时, 政治, Chest, Practice, 将来完成时, 艺术, Chest, 虚拟式/命令式, Practice, Review
Unit 36 讨论科学 (Guidebook)
11, 3, Chest, 6, 4, 4, 11, 3, Chest, 4, 1 = Goal
政治, 将来完成时, Chest, 科学, Practice, 虚拟式/命令式, 政治, 情态动词, Chest, Practice, Review
Unit 37 讲述可能发生的事 (Guidebook)
6, 4, 2, 4, Chest, 3, 6, Chest, 6, 4, 1 = Goal
科学, 虚拟式/命令式, 简单条件式, Practice, Chest, 情态动词, 科学, Chest, 过去未完成时, Practice, Review
Unit 38 表达假设 (Guidebook)
2, 3, 2, Chest, 4, 6, 2, 11, Chest, 4, 1 = Goal
简单条件式, 情态动词, 虚拟式过去未完成时, Chest, Practice, 过去未完成时, 简单条件式, 抽象名词 3, Chest, Practice, Review
Unit 39 表达过去可能发生的事 (Guidebook)
2, 6, Chest, 3, 4, 11, 2, Chest, 3, 4, 1 = Goal
虚拟式过去未完成时, 过去未完成时, Chest, 复合条件式, Practice, 抽象名词 3, 虚拟式过去未完成时, Chest, 复合条件式, Practice, Review
Unit 40 表达地点
11, 3, Chest, 5, 5, 5, 5, Chest, 5, 1 = Goal
抽象名词 3, 复合条件式, Chest, Path Extension Practices, Review
Unit 41 描述当下已经发生的事
5, 5, 5, Chest, 5, 5, Chest, 5, 5, 1 = Goal
Path Extension Practice Levels, Review
Unit 42 形容人和物品
5, 5, Chest, 5, 5, 5, 5, Chest, 5, 1 = Goal
Path Extension Practice Levels, Review
Unit 43 使用更多形式不变的动词
5, 5, 5, Chest, 5, 5, Chest, 5, 5, 1 = Goal
Path Extension Practice Levels, Review
Unit 44 表达数量和单位
5, 5, Chest, 5, 5, 5, 5, Chest, 5, 1 = Goal
Path Extension Practice Levels, Review
Unit 45 聊聊生意和工作
5, 5, 5, Chest, 5, 5, Chest, 5, 5, 1 = Goal
Path Extension Practice Levels, Review
Unit 46 句中使用动词原本形式
5, 5, Chest, 5, 5, 5, 5, Chest, 5, 1 = Goal
Path Extension Practice Levels, Review
Unit 47 使用代词造句
5, 5, 5, Chest, 5, 5, 5, Chest, 5, 5, 1 = Goal
Path Extension Practice Levels, Review
Unit 48 在句子中使用副词
5, 5, Chest, 5, 5, 5, 5, 5, 5, Chest, 5, 1 = Goal
Path Extension Practice Levels, Review
ㅤㅤ 
Each Goal has 8 challenges, to get the Legendary trophy
Each Unit has Levels and Chests, and each Level has Lessons.
Each Lesson has from 2 to 18 exercises (usually 15)
Each Goal has from 2 to 18 exercises (usually 15)
Each Challenge has from 2 to 18 exercises (usually 15)
ㅤ
ㅤAlso: 
... and some others... 
I once did the German for Russians course as a reverse tree (German being my native language). There were so many errors in there, I don't know how many I have reported. I was still getting notifications from Duo that my changes were accepted by the end of last year, even though I had finished that course a year ago or so.