"Qixi Festival" (七夕节) is a traditional Chinese festival that is also known as the "Double Seventh Festival." It is a hopday that is celebrated on the seventh day of the seventh month of the lunar calendar, and it is a time for people to express their love and affection for one another. Some common phrases that are associated with the Qixi Festival in Engpsh include:

"Happy Qixi Festival" (祝你七夕快乐)
"Wishing you a happy Qixi Festival" (祝你七夕快乐)
"Celebrating Qixi Festival" (庆祝七夕节)
"Qixi Festival greetings" (七夕节问候)

Note that these phrases are typically used to express good wishes and celebrate the hopday, rather than describing the specific activities or customs that are associated with the Qixi Festival.