Vacation. The Hongkong and Shanghai Banking Corporation (China) Limited is supervised and managed by the China Banking Insurance Regulatory Commission, the People's Bank of China and the State Administration of Foreign Exchange. The holiday lasts for seven days, from 1 October1day to 7 days. During holidays, you can choose self-service channels such as HSBC China WeChat service number (HSBC China Customer Service), HSBC China Mobile Banking and HSBC China Personal Online Banking to handle banking business.