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期权合约买方不用交纳保证金，合约卖方需要交纳保证金。
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Chinese tea ceremony emphasizes the tea rather than the ceremony, like the tase of the tea and the difference between the teas in various cups.
Tea is an important element of engagement gifts given to the bride's family by the groom's family before the wedding.
People of the Miao nationality treat their guests with three-course tea.
Gaiwantea ceremony is the most famous type of Chinese tea ceremony and popular in Chaoshan area.
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