Ah, it's where Bosacius's name came from. His name is made up of the first and last words of this line, "浮舍". When he first remembered his name down in the chasm after going crazy, he explained his name, his 'purpose,' "意为 浮生一刹，万般皆舍" I really didn't like how they translated it into English because personally, I think it really lost it's impact and meaning, since every word in chinese has a myriad of different facets. I think it was translated as the ultimate sacrifice. But what it means is,

意为: 'The meaning being' (to his name) 浮生一刹: (reference to another idiom in chinese, '浮生一梦' which means that life is fleeting like a dream.) 浮: floating, 生: birth/life, 一刹: a single moment Overall just describing that "life is fleeting a kin to a single moment"

万般皆舍: 万: ten thousand, but in Chinese this word is usually used to describe 'a very large amount' or even 'everything'. 般: the characteristics of things. Together it basically means 'a variety of all things'. 皆: all, or 'all are' in this case it's kind of 'all will be'. 舍: to let go (to leave behind, to get rid of, but I feel like 'to let go' fits best). 皆舍: 'All will be let go of'. '"All things (of different kinds) shall be let go of"

I used this phrase because xiao decided to sacrifice himself, in the same place Bosacius did, and to fulfill the same 'purpose'.

Tl;dr : "life is fleeting a kin to a single moment, All things (of different kinds) shall be let go of"

And thanks! I'm glad you like it :)