a by-stander is always clear-minded; an onlooker is in a better position to judge; the spectator sees most clearly; an outsider (/observer) sees more objectively;standers by see more than gamesters; the onlooker sees the game best ❍ 俗语说： “～。” (《红楼梦》701) As the proverb says，“ the spectator sees most of the sport.”
旁观者清pang guan zhe qing
the onlooker sees the game best
旁观者清pánɡ ɡuān zhě qīnɡ
旁观者由于冷静、客观，却看得清楚；而当事者由于对利害得失考虑得太多，反而糊涂。the onlooker sees the game best, the observer sees more objectively, A by-stander is always clean-minded.