Sea is a large apparatus to hold wine, in ancient times, people call the large apparatus to hold wine "sea", "Dream of Red Mansions", there is also a time, Liu Lou Lou two into the Grand View Garden, Jia mother and the people took her to the Bar Cui nunnery, Miaoyu private and Bao hairpin, Daiyu tea, Bao Yu came in, Miaoyu asked him, "You can eat a sea of tea. Can you eat this sea of tea?" It can be seen that "sea" refers to a larger container