In any of the following circumstances, the frontier inspection station has the right to prevent exit or entry:
1, does not hold a Hong Kong and Macao Pass, a Home Visit Permit for Hong Kong and Macao compatriots or other valid documents;
2. Holding forged, altered or other invalid passes to and from Hong Kong and Macao or home visits for Hong Kong and Macao compatriots, fraudulently using others' passes to and from Hong Kong and Macao or home visits for Hong Kong and Macao compatriots;
3. Refuse to submit documents.
legal ground
Article 19 of the Law of People's Republic of China (PRC) Municipality on the Administration of Exit and Entry of Citizens. Mainland citizens travelling to and from Hong Kong and Macao and compatriots from Hong Kong and Macao travelling to and from the Mainland must show their exit and entry certificates to the frontier inspection stations at ports open to the outside world or designated ports, fill in exit and entry registration cards and accept inspection. Twenty-second travel permits to and from Hong Kong and Macao are valid once within the validity period. The validity period of the Travel Permit between Hong Kong and Macao is five years, which can be extended twice, each time not exceeding five years. The certificate shall be kept and used by the holder. Every time he goes to Hong Kong or Macao, he shall go through the application procedures in accordance with the provisions of Articles 6, 8 and 10 of these Measures, and go through the round-trip endorsement after approval. Public security organs specially authorized by the Ministry of Public Security can make multiple round-trip endorsements. Twenty-third Hong Kong and Macao compatriots who have lost their Home Visit Permit after coming to the Mainland shall report the loss to the city or county public security organ or the transportation department. After investigation, the public security organ will issue a certificate, and the exit-entry administration department of the public security organ will issue a valid exit-entry pass to prove the return to Hong Kong and Macao. Hong Kong and Macao compatriots who have lost their Home Visit Permit in Hong Kong, Macao or the Mainland may reapply for their Home Visit Permit in accordance with the provisions of Article 14 of these Measures. Article 26 Anyone who holds forged, altered or other invalid passes to and from Hong Kong and Macao, passes to and from Hong Kong and Macao, home visits for compatriots from Hong Kong and Macao and entry and exit passes shall be given a warning or detained for up to five days, depending on the seriousness of the case.