What are some sad songs? Male and female duet

Make a mistake-pure sadness, men and women sing the song "Forgotten Helplessness" and "Leave Sadness to Yourself". After tomorrow-men and women sing sad love songs.

Acacia in the Wind and Rain by Jacky Cheung and Tang Baoru.

Jacky Cheung and Li Ruien's "Flow Without Stop"

Jacky Cheung and Kuang Meiyun "There is always only love"

The Warm Eyes by Chiliam and Xu Qiuyi.

Sorrow and sadness in Chile and Xu Qiuyi.

Love in Maple Leaves by Chile and Xu Qiuyi

Cai Jiwen and Liang Yanling "Walk with You Slowly"

Dicky Cheung and Gigi Lai's "infatuation"

Jiang Zhiguang and Wei Qishan's We Meet. We understand. What is the relationship between acquaintances?

Guan He's Two People Forgotten in the Smoke

Guan He, "When People Tears on the Journey"

Tom Chang and May "My favorite person hurts me the most"

Emil Wakin Chau and Chyi Yu's Lovers in the World.

This is an old song.