Chinese marriage became a custom between 402-221 B.C. Despite China's long history and many different geographical areas, there are basically six rituals, generally known as the three letters and six etiquette . Do you know how to express the following ideas. x 1) 聘书、礼书、迎书 2) 纳采、问名、纳吉、纳征、请期、亲迎 3) 拜天地、掀盖头、喝交杯酒、入洞房