When you enter the Hong Kong Customs, the official will stamp the date on your Hong Kong Pass. If you enter on February 28th, you must leave before 24: on February 15th. If you don't leave the country before 24: pm on the 15th, you can't reasonably explain the reason for your stay.
Some reasons are understandable. For example, an emergency needs to be treated in Hong Kong, and there is a certificate from a Hong Kong hospital. Or for other reasons, I was stranded for a day because of a typhoon. No problem. If there is no justifiable reason, it will be regarded as illegal detention and will be fined, and there will be restrictions on the next visit to Hong Kong.
During his stay in Hong Kong, Dick made multiple trips to and from Macau, and there is no need to re-endorse. That is to say, Hong Kong and Macao are visa-free and will not consume the number of visits to Hong Kong by your Hong Kong Pass. I can also tell you another trick.
That is, you can enter Hong Kong on February 8, go to Macau on February 14 and return to Hong Kong on February 15, and then stay in Hong Kong for one more night and then return to the mainland on February 16. Because the Hong Kong government stipulates that the day of re-arrival of tourists in Hong Kong is the last day of their previous stay, the Immigration Department will grant them an extra day's stay, allowing them to return to the Mainland the next day after staying overnight.
Extended information
The Pass for Travelling to and from Hong Kong and Macao Special Administrative Regions refers to the Pass for Travelling to and from Hong Kong and Macao Special Administrative Regions on Business, which is signed by the Hong Kong and Macao Affairs Office of the State Council or the foreign affairs offices of major provinces and cities for mainland personnel travelling to and from Hong Kong or Macao on business;
The Pass for Travelling to and from Hong Kong and Macao refers to the Pass for Travelling to and from Hong Kong and Macao between the People's Republic of China and the People's Republic of China, which is issued by the public security exit-entry administration department of the city or county where the registered permanent residence is located when mainland residents travel to and from Hong Kong or Macao Special Administrative Region for private reasons, visit relatives, engage in business, training and employment.
in other words, these are two different documents, and the cancellation of the endorsement fee and the production fee this time is the "Pass" for people going to Hong Kong and Macao on business. The endorsement fee and cost of the Pass for those who go to Hong Kong and Macao for personal reasons have not been cancelled. For ordinary residents, it is still necessary to pay relevant fees for handling Hong Kong and Macao Pass.
On April 13, 215, the public security organs stopped issuing "one sign and many trips" to Shenzhen residents from now on, and instead issued "one trip a week" endorsements. From September 1, 218, mainland residents across the country can apply for issuing (re-issuing) entry documents and applying for entry and exit documents in different places, and it can be completed within 7 working days.
Mainland residents can apply for the replacement (replacement) of ordinary passports, Hong Kong and Macao passes and Taiwan passes at any public security exit-entry administration institution across the country; Mainland residents can apply for team travel endorsements to and from Hong Kong, Macao and Taiwan at any public security exit-entry administration institution across the country. The time limit for mainland residents to apply for ordinary passports, travel permits to Hong Kong and Macao, and travel permits to Taiwan has been shortened to seven working days.
Reference: Baidu Encyclopedia _ Chinese People's Pass to and from Hong Kong and Macao.