help!

I’m looking for an old BL manhwa i read before where it was a long haired brunette mc and the ml has black hair that was always in a bun. It was a historical setting similar to Mao Dao Zu Shi. The couple grew up together and kind of had a rivalry until their clan got invaded and the mc was presumed to be dead. and then after being stuck in a cave and training his martial arts or smth he finally gets out and meets the ml again who turns out to have joined some sort of ‘evil’ clan