In general, it is four days' notice, not more than seven days. According to the relevant information of Hebei Bank of Communications, the final physical examination of Langfang Branch of Hebei Bank of Communications is generally notified four days in advance, which will not exceed seven days. Established in 1908, Bank of Communications is one of the six largest banks in China, one of the oldest banks in China and one of the note-issuing banks in modern China.