7. Perform Words (xūcí) are separated from other phrases:

7.1 Adverbs:
很好 hěn hǎo (be good/fine)
最大 zuì dà (be the biggest)
非常快 fēicháng kuài (be extremely fast)

7.2 Prepositions:
在前面 zài qiánmiàn (in the front)
生于1940年 shēng yú 1940 nian (was born in 1940)

7.3 Conjunctions:
你和我 nǐ hé wǒ (you and I);
你来还是不来 nǐ lái háishi bù lái? (Are you coming [or not]?)

7.4 The Constructive Auxiliaries (jiégòu zhùcí) de/d (的 ), de/di (地 ), de (得), zhi (之).
卖菜的 mài cài d(e) (vegetable seller[s])
慢慢地走 mànmàn de/di zou (walk slowly)
红得很 hóng de hěn (be really red)

7.5 The Model Auxiliary is written separately at the end of a sentence:
你知道吗？ nǐ zhīdào ma? (Do/Did you know)?
快去吧！Kuài qù ba! (Hurry and go!)

7.6 Exclamation:
啊，真美！ A, zhēn měi! (Ah, It’s really beautiful!)

7.7 Onomatopoeia:
啪 Pā! (Bang!”)

8. Set Phrases (chéngyǔ):

8.1 Four-character Set Phrases that can be divided into two halves are linked by a hyphen. For example:
层出不穷 céngchū-bùqióng (happens/ed endlessly)
光明磊落 guāngmíng-lěiluò (be righteous)

8.2 All other four-character set phrases and well-known expressions (shúyǔ) that cannot be readily segmented are linked. For example:
不亦乐乎 bùyìlèhū (Isn’t it a happy thing?)
爱莫能助 àimònéngzhù (Sorry that I can’t help you.)

9. Capital Letters:

9.1 The letter at the beginning of the sentence is capitalized. As an example:
Míngtian nǐ qù ma? (Are you going tomorrow?)

9.2 The initial letter of the appropriate noun is capitalized. For example:
北京大学 Běijīng Dàxué (Peking University)
泰山 Tài Shān (Mount Tai)
黄河 Huáng Hé (Yellow River)

10. Hyphenation:

10.1 Care should be taken to hyphenate only between the syllables of words and other linked expressions at the ends of lines of running texts.

11 Indication of Tones:

11.1 Only the original tones are indicated; tone sandhi is not indicated.

After reading, please try hard to remember all these rules by heard. That's very important.