Unidentified cash coins - Got any ideas? (Large File)

I recently got a group of cash that included some that I've not seen before. I can't seem to find them in any reference that I have. Can anyone help with their IDs?
#1 - 22mm in diameter


#2 - 25mm


#3 - 21mm


#4 - 25mm


#5 - 25mm


#6 - 23 mm


#7 - 24mm


#8 - 23mm


#9 - 25mm


#1 - 22mm in diameter


#2 - 25mm


#3 - 21mm


#4 - 25mm


#5 - 25mm


#6 - 23 mm


#7 - 24mm


#8 - 23mm


#9 - 25mm


"Have a nice day!"
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Comments
1 Ren Zong 1796-1820
2 Chien Lung 1736-1795
3 Xuan Zong 1821-1850
4 Korea?
5 Korea?
6 Chien Lung 1736-1795
7 Kuang Su 1890-1908, Kwangtung Prov. Milled
8 Chien Lung 1736-1795
9 Mu Zong 1862-1874, Yunnan Prov.
5 Korea Ho mint 1 mun. 1757-1806 KM 29.9
First question - What reference are you using?
Second question - Do you read Chinese and Manchu?
I'm asking because you IDed those coins so quickly. I spotted the Koreans as not being Chinese or Japanese, but wasn't sure if they were Korean or Annamese, and I had barely started in Fisher's Ding when your first response popped up. If you have a better English language reference than Fisher or Scjoth I need to get it. If it's your reading ability, I can't match up. After about 53 years of on/off study I still read less than 200 Kanji characters. I wouldn't even know where to start on Manchu.
I don't read Chinese or Manchu, but I recognized most of the emperors and knew approximate dates from past experience. I recognized the Ho mintmark on #5 as Korean, and since the obverse of 5 matched #4 I made the assumption both were Korean.
Time for one more purchase from Seamans - my belated Channukah gift to myself.