接风洗尘: welcome and help wash off the dust -- to treat sb. to a dinner on arriving
设宴: give a banquet; fête 短语和例子设宴欢送 give sb. a send-off [farewell] dinner; 设宴欢迎 give a welcome dinner to sb.; 设宴饯行 a feast was given on the occasion of one's departure.; give a farewell party i