Due to the economic crisis, the days of staying at a local five-star hotel for 6,000 yuan a night are gone forever. The antecedent is days, and when it is substituted into the attributive clause, it is: the local 5-star hotel charges 6000 yuan a night during _ the _ days. The difficulty of this problem lies in the number of days in advance and its attributive clause. The local five-star hotel charges 6000 yuan a night, which is separated by the predicate.