oh no you've been scammed. this manhua is too fluffy to have an angsty angst. i recommend you to read "december rain" if you really want to have that "gut wrenchingly sad"
here's the link:
https://www.mangago.zone/read-manga/december_rain/
maybe they're tears of joy. i'm re-reading it right now and it just so cuteee *cries* i want what they have huhuhu. anyway about "december rain" you really should give it a try. though you may find people on the comment section saying their negative reaction about it, don't let it affect you. give it a try and then you can have your opinion about it :D
i also heard about "Ten years I loved you the most" but i haven't read it yet. maybe i'll give it a try as well ^^ thank uuu
honestly after reading this i don't understand why it was hyped sm about having good angst. it was good but i wanted to read something gut wrenchingly sad