Oh, I get asked this all the time when people spot the dramas or fan art — the novels in the 'Three Lives' family are by Tang Qi Gong Zi (唐七公子).
I actually binged the books and the drama back-to-back: the best-known entry is 'Three Lives, Three Worlds, Ten Miles of Peach Blossoms' (sometimes just called 'Ten Miles of Peach Blossoms'), and Tang Qi Gong Zi also wrote related works like 'Three Lives, Three Worlds, The Pillow Book'. Her pen name is what most readers see; she’s a modern Chinese author whose romantic xianxia stories blew up online and later got huge TV adaptations like 'Eternal Love'. If you’re tracking editions, some are fan-translated while others have official translations or foreign publishers, so names can shift a bit across versions. I love how the prose mixes mythical worldbuilding with soap-opera-level relationship drama — perfect for late-night reading.
If you want to trace the original voice, look for the name Tang Qi Gong Zi on Chinese bookstore sites or the Chinese-language covers. That usually tells you you’ve got the genuine creator behind those entwined, heartbreak-and-reunion sagas.