"Old Boy" cover by Joya Ohashi
Liu Ruoying's "Later" cover by KIRORO
Ho Yunshi's "Secret of the Hurt City" cover by Ayumi Hamasaki's "secret"
Hu Yanglin's "Cherry Blossom Dance" cover by Mika Nakajima's "Cherry Blossom Flurry"
Annie An's "I've Got You With Me" cover by Ayumi Hamasaki's "to be"
Annie An's "You've Got Me With Me" cover by Ayumi Hamasaki's "to be"
What's so special about this song? I" cover of Ayumi Hamasaki's "to be"
Han Xue "Drifting Snow" cover of Nakajima Mika's "Snowy Hana"
Tian Tian Brothers "Sunflower" cover of Arashi's "only love"
Liu Ruoying "Light" cover of Koji Tamaki's song of the same name (a little bit old)
Angel Aki "To the Enlightened Ones To Your Fifteen-Year-Old Self" has Liu Ruoying and Liu Liyang have two cover versions
Of course, there are some songs by Oriental Divine Ki that have three versions in China, Japan and Korea, like the way u are, rising sun, mantra and so on
And also, Choi Chunjia's "Waiting for a Sunny Day" has a cover of "一青窈" (かざぐるま) (一青窈) (一青窈 - "Windmill")