it's shown/mentioned in one of the chapters (forgot which one) and ch.49 that gu lang blinded him by accident due to the mist/gas in the mountains that made gu lang hallucinate that murong was zheng yufei :'(
I wanted this to have a happy end so bad but I would’ve done the same if I were Clauden- out of respect for myself and to let those gold memories stay gold
Please update this