not essential
This is a polysemous word. Please browse the following two senses: idiom < / Li > < li > is optional: Buddha jumps over the wall to sing a song < / Li > < UL > is optional
Chinese PinYin : kě yǒu kě wú
not essential
accumulate bit makes too remarkable. jī wēi chéng zhù
Compare the green with the white. qǔ qīng pì bái