Help identifying ancient (Chinese) coins

Hello! I am reaching out to the community here with the hope that someone may be able to recognize two coins recently purchased from an antiques seller. I have searched the catalogue with the images of both coins but I have not been able to find a match for either. 
 

I currently unable to provide information on weight or composition, unfortunately. 
 

Any help in identifying these 2 coins would be greatly appreciated. 
Thank you!

The first coin looks like 

Hartill# 6.16

Early round coin (350-220BC) - Zhou round coins.

Ban Yuan - State of Qin?

not yet listed in the Numista database

Extremely rare, therefore a replica unless proven otherwise.

The second coin is more complex with mongolian characters on obverse.

On reverse the first top character is 王 (king) and the character on bottom is not chinese, mongolian, vietnamese nor korean, so may be a symbol ?

From right to left old style 通寶

I've looked to charms without success in the reference site : https://primaltrek.com/

#Frenchlover, thank you very much! Indeed, the first coin looks like the Zhou round coin. If it is a replica, it a very old one, as the coin seems to be quite old.. 

The Coins were purchased from a Mongolian person in a remote part of the country, this would help explain the Mongolian characters on the second coin. He was claiming the coin dates to Mongke Khan’s reign. However, I was not able to match it with available images of coins from his era..

Absolutely no connection with the Mongol Khanates, it's just a sales pitch 🤣.
There are several specialists on the forum who could tell you a bit more about your coin which is probably a charm.
@lsmycher  @LDC63 @KennyG 

哈喽，我快有一年的时间没有上线了。
首先不好意思，第一枚是假币，毋庸置疑的，"半圜"钱币是秦国在战国中晚期时候铸造的。只在陕西省出土过，锈也是苔藓一样的绿锈。因为极为稀少，价格超过5万元人民币，而且因为是用石头作为模具，很少有铭文清晰的。
第二个正面是“壬子通宝”，背面“圣寿万年”，是篆书。据传说是清朝乾隆皇帝为显示其治国有方，太平盛世，并表示对老人的关怀与尊敬，因此举办千叟宴，宴请六十岁以上的老人来赴宴。壬子通宝背隶书圣寿万岁，时年为乾隆五十七年（1792年），壬子年。但是就算是中国国内，几乎也没有见过真品。
买东西不要从一些不专业的商家上买，特别是中国钱币。因为就算是在中国，假货的数量也是超过真品的，甚至比真品还要精美。至少要知道蒙元帝国的钱币上要么是伊斯兰文，要么是老版蒙古文。

Hello, I haven't been online in almost a year.
First of all, I'm sorry, the first one is a fake, there is no doubt that the "half-circle（ban huan）" coin was minted by the Qin State in the middle and late Warring States period. It has only been unearthed in Shaanxi Province, and the rust is also a moss-like green rust. Because it is extremely rare, the price is more than 50,000 yuan, and because it is made of stone as a mold, there are few clear inscriptions.
The second front is "Renzi Tongbao（Coin made in the year of Renzi）", and the back is "Shengshou Wannian（The emperor's age can reach 10,000 years）", which is a seal script. According to legend, the Qianlong Emperor of the Qing Dynasty held a thousand banquets to show that he governed the country in a peaceful and prosperous manner, and expressed his care and respect for the elderly. Long live the holy life of Renzi Tongbao back Lishu, when it was the fifty-seventh year of Qianlong (1792), the year of Renzi. But even in China, there are almost no real products.
Don't buy things from unprofessional merchants, especially Chinese coins. Because even in China, the number of fakes exceeds the real thing, and even more beautiful than the real thing. At the very least, you should know that the coins of the Mongol Yuan Empire are either Islamic or the old Mongolian script.

Your explainations are quite interesting !

Then when I search on Google 壬子通宝 I get no response.

I have no idea on what means the character

The symbols above are all "子". Chinese characters can take on any shape as long as you don't change the original framework of a character. In fact, even now, most Chinese people can't understand these fonts, so they can only read them in dictionaries. In ancient China, nobles and literati liked to use ancient texts to express their cultural level, and the love for antiques was an enviable virtue at that time. Moreover, the older the person, the more they like to use ancient characters to represent their longevity and harmony with the heavens.

This must make reading old books much more complicated 🤔

@Frenchlover & @lsmycher , thank you very much for your explanations! I M more of an amateur collector, my knowledge and experience in this field is quite limited. Nonetheless, I bought the coins more as a souvenir rather than collection pieces. I was hoping they may have some historical value but if they don’t that's also fine. The price I paid was petty so no los there. 

This collection mentality is the best! In fact, even if these two coins are in China, I dare say that 99.99% of collectors don't know them. In recent years, the coin collection market in China is extremely chaotic. Because of the influx of new collectors, the coin counterfeiting industry has become fully mature, and even all the ancient coins seen in some city markets are counterfeit. If you want to collect China coins, I recommend you to collect some of the most common coins. In China, there are only the most common coins, that is, the Song Dynasty coins are hardly forged. However, as long as there are a few rare types of ancient coins in China, 80% to 90% of them are counterfeit coins produced in recent years.