How many days can Hong Kong and Macao Pass stay?

That depends on what kind of endorsement you have. If it is a D-sign, you can stay in Hong Kong until you are allowed to stay (for example, you can stay at school or work for more than one year).

Ordinary travel endorsement (L-sign or G-sign) can stay for no more than seven days at a time. If you apply twice, you can return to the mainland once and then enter Hong Kong immediately. Actually, you can stay 14 days.

The Hong Kong and Macao Pass, commonly known as the Two-way Permit, is a travel document issued by People's Republic of China (PRC) and the Exit-Entry Administration of the Ministry of Public Security of China to mainland residents in China for private travel, visiting relatives, business, training, employment, study abroad and other non-official activities.

Pass is divided into individual travel, group travel, visiting relatives, business, other, stay and other categories.

After August 2007 1, 2065438, the group tour passes to Hong Kong and Macao through various ports will no longer be signed by travel agencies, but can also be directly passed by group tours.

References:

Baidu encyclopedia? Exit－Entry Permit for Travelling to and from Hong Kong and Macau