She did it because she knows that the ML has a mission / destiny that will probably leave her a widow. I'm pretty…
Yeah, Yetan's thought was that if Qingkiu and Youqin fall in love and then Youqin dies, Qingkiu is going to be alone all the eternity. Yetan just was worried about her sister, nothing more.
https://www.weibo.com/7394379918/Mu4LO1HWV?pagetype=profilefeed
https://vku.youku.com/live/ilproom?id=8147762&sharekey=047f574949e9d9824940d92b1e44d58e2
https://twitter.com/makikialike/status/1627787448917917697
https://twitter.com/Cpop_Melon/status/1627544824080642049
https://twitter.com/1MI86KEAI/status/1627725108373778432
https://twitter.com/_landyli/status/1627553821441527808