Your mandarin is very good,and  thank you for you telling me China has nearly 1.4 billion people.

1）I also have a quesetion about the "棋路的地", do you mean the land area ?

2）I think you use "北部 南部 西部 东部" is batter than "北边 南边 西边 东边", of course you can use them,"北部 南部 西部 东部" are more  official .

3) I think there is a little error, most Chinese people  think the Southern Sea is on/at the southern of China.(Can you tell me I should use "on" or "at" ?)

4) I think there are some errors,but I don't know what you want to say.

5) Chiese people use Arabic numerals，so  I can understand  "中国的人口：1377200505" .(and Others have wrote)

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Please write down your native language version，and then we can understand what you want to express.

中国的地理

1）中国地处亚洲大陆东部。棋路的地总面和约九百六十万平方公里。
2）中国的北边是俄罗斯，南边是印度，西边是几个中东国家，东边是海。
3） 大陆的东部濒临渤海，黄海，东海和南海。
4）中国自北而南有海湾和港口城市：大连，天津，青岛，上海，福州，厦门，广州。
5）中国的人口：1377200505怎么写？
有的地方人口多，有的地方少。西部高原，山地，沙漠一带人口很少。越往东地形越平，气候越好，出产越丰富，人口越多。