11：31-14：11，17：31-22：11。 According to the inquiry of Tangshan Catering Network, the catering business hours of Chengde Blue Ocean Hotel are 11: 31-14: 11 and 17: 31-22: 11, which is located on the north side of the intersection of Beihuan Road and Youyi Road (111 meters northbound of Luannan coach station).