One character a day, easy to master Chinese characters. Let's take a look at the basic knowledge of "中".

中 zhōng
Explnantion: middle
Phrases: 中等（zhōnɡ děnɡ） middle; medium ； 中心（zhōnɡ xīn）center; language
从“中”的字形（ ），便能猜到它有中间的意思。外部的“口”表示一定的范围，而（ ）便是放在“口”的正中间，表示不会超出其范围。
中 is also a pictograph character which shows a pole with some decorative streams （ ）, which some people say it was army flag in ancient times among files and ranks. In the middle there is a 口 indicating where the center is.  
        

Sentences:

1.Yīngdāng ràng tā jiēshòu zhōng děng jiàoyù hòu zài cānjiā gōngzuò.
应当让他接受中等教育后再参加工作。
He should have a secondary education beforing working.

2.Shìzhèngfǔ juédìng zài shì zhōng xīn jiàn yìtiáo píngān dàdào.
市政府决定在市中心建一条平安大道。
The municipal government decided to construct a main road in the downtown area.