一、二/两、三、四、五、六、七、八、九、零；十、百；半
Explanation
“二”和“两”都是表示数字2的中文数词，但用法不同。“二”通常用于数字组合中（如十二、二十、二百），而“两”通常用于量词前（如两个人、两本书）。“半”表示一半，常用于时间（如八点半）和数量（如半个小时）。
"二" and "两" both represent the number 2 in Chinese, but they are used differently. "二" is typically used in number combinations (like 十二, 二十, 二百), while "两" is used before measure words (like 两个人, 两本书). "半" means "half" and is commonly used with time (like 八点半) and quantities (like 半个小时).
Examples
五 十五 一百一十五 六 二百六（十） 二百零六
Five, fifteen, one hundred fifteen, six, two hundred sixty (ten), two hundred six
十二 二十 二百 两百
Twelve, twenty, two hundred, two hundred
两个人 两本书
Two people, two books
八点半 半个小时
Eight thirty, half an hour