《红楼梦》第25回里,王熙凤当众对林黛玉说:“你既吃了我们家的茶,怎么还不给我们家作媳妇?”为何吃了人家的茶,就得给人家当媳妇?原来中国古人以为茶树只能靠种子萌芽成株,不能移植,否则就会枯死。因此,茶树被看作爱情至死不渝的象征,民间也以茶作为男女订婚的珍贵礼品。唐太宗贞观十五年(公元641), “Dream of Red Mansions” 25th back, Wang Xifeng public to Lin Daiyu said: “You have not only eaten our family’s tea, why not give our family as a wife?” "Why did you eat someone else’s tea, you have to give someone a daughter-in-law? It turned out that the ancient Chinese tea tree can only rely on seed germination Cheng Zhu, can not be transplanted, otherwise it will die. Therefore, the tea tree is seen as a symbol of the unbroken love, tea is also used as a private gift of men and women engage in engagement. Tang Taizong Zhenguan fifteen years (AD 641),