2762. This #kanjipuzzle is about evolution. Start with one character, add a few strokes, and get another, then repeat. 一 -> ? -> ? -> ? -> ? -> 庭

一 -> 二 -> 三 -> 王 -> 廷 -> 庭  

一  ICHI, ITSU, hito(tsu) - one

二  NI, futa(tsu), futa - two

三  SAN, mi(tsu), mi(ttsu), mi - three

王  OU - king

廷  TEI - imperial court, government office

庭  TEI, niwa - garden