轻敲桌面 meaning in English

tap the table

When you see tea - drinkers tapping the table with three fingers of the same hand , it is a silent expression of gratitude to the member of the party who has refilled their cup
您是否曾经注意到，当服务生为客人倒茶时，有些客人会用手指轻敲桌面，其实这是有历史典故的喔！
His shocked companions wanted to kowtow for the great honour . instead of allowing them to reveal his identity , the emperor told them to tap two fingers on the table . one finger represented their bowed head and the other represented their prostrate arms
，有一天皇帝与他的臣子到了一家茶馆，为了要掩饰他的尊贵身分，便站起来为大家斟茶，为了不吓坏臣子，皇帝事先想出让臣子用手指轻敲桌面，以代表磕头施礼其中一根手指代表他们低头，另一手指则代表拱起的臂膀。