tā / zài / péng / yǒu / de / hūn / lǐ / hè / kǎ / shàng / xiě / zhe / zǎo / shēng / guì / zǐ / biǎo / dá / duì / xīn / rén / de / zhù / yuàn

他在朋友的婚礼贺卡上写着“早生贵子”，表达对新人的祝愿。

He wrote “May you soon have a son” in his friend's wedding card to express his best wishes to the newlyweds.