Any Chinese Coin Collectors? Please help me.

What is this coin? how much is this worth?








我的微信:wxu604

Hello, welcome abord

Next time you should post a single coin per topic, precise the diameter and weight if possible.

1) Qian Yuan Zhong Bao, Tang dynasty
Usualy fake due to its age (more than a millenium), rarity and high cost.

2) Kang Xi, Boo-Chiowan
current coin

3) Xian Feng Zhong Bao, 50 cash, Boo-Chang, Qing dynasty (not yet on Numista)
Difficult to say if genuine cause it's a large coin and it's rare, you should precise the diameter cause there are several types with different sizes.

That last type is on Numista.
https://en.numista.com/catalogue/pieces47081.html