Chinese covers of Japanese songs
Another cover of Teresa Teng
Original: https://lyricstranslate.com/es/aki-yashiro-%E3%81%AA%E3%81%BF%E3%81%A0%E...
Cover: https://lyricstranslate.com/es/teresa-teng-%E7%94%9C%E8%9C%9C%E7%9A%84%E...
(Original) Anzen Chitai
https://lyricstranslate.com/en/anzen-chitai-%E3%83%AF%E3%82%A4%E3%83%B3%...
https://www.nicovideo.jp/watch/sm11649793
(Cover) Alan Tam
https://lyricstranslate.com/en/alan-tam-lyrics.html (lyrics not found)
https://www.youtube.com/watch?v=Uye8WLx-n5o
(Original) Akira Fuse
https://lyricstranslate.com/en/akira-fuse-lyrics.html (lyrics not found)
https://www.youtube.com/watch?v=s9RBKvJ6o6w
(Cover) Alan Tam
https://lyricstranslate.com/en/alan-tam-lyrics.html (lyrics not found)
http://v.yinyuetai.com/video/705674
Original: AKIRA INABA
https://www.youtube.com/watch?v=ivnE3cLjkt0 (lyrics and artist not found)
Cover: ALAN TAM
https://lyricstranslate.com/en/%E8%AD%9A%E8%A9%A0%E9%BA%9F-%E9%81%B2%E4%...
Original: H2O
https://lyricstranslate.com/en/h2o-%E6%83%B3%E3%81%84%E5%87%BA%E3%81%8C%...
Cover: ALAN TAM
https://www.youtube.com/watch?v=c_ZSGkoRB0w (lyrics not found)
Original: MAYUMI ITSUWA
https://lyricstranslate.com/en/mayumi-itsuwa-lyrics.html (lyrics not found)
https://www.youtube.com/watch?v=N0N9SrJ9EA4
Cover: ALAN TAM
https://lyricstranslate.com/en/%E8%AD%9A%E8%A9%A0%E9%BA%9F-%E5%BF%98%E4%...
In 2005, Seiko Matsuda made an album for the Taiwan market. She chose 4 songs and recorded them in chinese.
Original:https://lyricstranslate.com/en/seiko-matsuda-%E7%91%A0%E7%92%83%E8%89%B2...
Cover:https://lyricstranslate.com/en/seiko-matsuda-zh%C3%A0n-l%C3%A1n-s%C3%A8-...
Original:https://lyricstranslate.com/en/seiko-matsuda-%E8%B5%A4%E3%81%84%E3%82%B9...
Cover:https://lyricstranslate.com/en/seiko-matsuda-hu%C7%92-h%C3%B3ng-s%C3%A8-...
Original: https://lyricstranslate.com/es/seiko-matsuda-%E5%A4%8F%E3%81%AE%E6%89%89...
Cover: https://lyricstranslate.com/es/seiko-matsuda-xi%C3%A0-ti%C4%81n-de-m%C3%...
I don't know if it's interesting for you but since you don't have a specific collection, I report here these two cantonese covers from korean songs (not available on LT at the moment)
ORIGINAL
title: 정의 마음
singer: 조용필 (Cho Yong Pil)
https://www.youtube.com/watch?v=20qTOUYRAek
COVER
編織 - 譚詠麟
https://www.youtube.com/watch?v=Va3zIcBVYcI
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ORIGINAL
title: 간양록
singer: 조용필 (Cho Yong Pil)
https://www.youtube.com/watch?v=FT7RFEffdLE
COVER
冬之寒流 - 譚詠麟
https://www.youtube.com/watch?v=xPf3FsAlPj4
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Cho Yong Pil
https://lyricstranslate.com/en/cho-yong-pil-lyrics.html
Original: https://lyricstranslate.com/es/%E4%B8%AD%E6%A3%AE%E6%98%8E%E8%8F%9C-%E7%...
Cover: https://lyricstranslate.com/es/%E5%BC%B5%E5%9C%8B%E6%A6%AE-%E7%AC%AC%E4%...