Tā chūláizhàdào, duì zhèlǐ de guīju hái bù tài shúxī.
He just got here and isn't very familiar with the rules yet.
Tips
usage
Set polite phrase used when introducing yourself in a new workplace, school, or city. 初 = first time, 乍 = just / suddenly — together they double-emphasize 'I just got here'. Almost always followed by a humble request like 请多关照 or 请多多指教.