0 used to represent the sound of kissing, especially when people meet and kiss each other on or near the cheek -- (用来形容亲吻的声音,尤其是人们见面时在脸部的亲吻)
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
再长的路,一步步也能走完,再短的路,不迈开双脚也无法到达。