Few more angst/tragedy gems to read :

1- 赝妃 by 西西东东 | Historical, tragedy 

Raw: https://m.shubaow.net/183/183006/

2- 春光鎮還在 by老千 | Modern-day, college, reunion, OE 

Raw : https://m.shubaow.net/77/77263/

3- 梦回大清 by 金子 | Historical, reunion, tragedy 

Raw: http://quanben-xiaoshuo.com/n/menghuidaqing/xiaoshuo.html

4- 后来的你，好不好 by 老千 | Modern-day, school-life, tragedy 

Raw : http://quanben-xiaoshuo.com/n/houlaideni-haobuhao/xiaoshuo.html

5- 玥影横斜 by 夜幽梦 | Historical, Tragedy,         

Raw : http://quanben-xiaoshuo.com/n/yinghengxie/

6- 我只是難過不能陪你一起老 by 唐扶搖| Modern-day, school-life, tragedy

Raw: https://tw.ixdzs.com/novel/%E6%88%91%E5%8F%AA%E6%98%AF%E9%9B%A3%E9%81%8E%E4%B8%8D%E8%83%BD%E9%99%AA%E4%BD%A0%E4%B8%80%E8%B5%B7%E8%80%81 

7- 致长久爱你的时光 by 唐扶摇 | Modern-day, school-life, supernatural, tragedy 

8- 许你再见钟情by 绕梁三日| Modern-day, HE 

Raw: https://www.hetushu.com/book/5800/index.html

9- 想念 by 西西东东 | Modern-day, college, reunion, HE 

Raw: https://m.shubaow.net/124/124636/

10- 初戀愛 by 九夜茴 | Modern-day, college, tragedy 

Raw: https://www.ttkan.co/novel/chapters/chulianai-jiuyehui

Few more angst/tragedy gems available on novelupdates : 

- The Twentieth Year After My Death

-The Bittersweet Days of Our Youth 

- A Friend Who I Loved for a Long Time

- Fish Without Water

- The Golden Forest (korean) 

- The Chronicle of the Oriole Island

- I'm leaving 

- Breakup Gift