BEIJING, May 5 (Xinhua) -- China recorded more than 8.4 million exits and entries across its border during the four-day May Day holiday starting May 1, said the National Immigration Administration (NIA) Sunday.

The average daily number of the overall inbound and outbound trips surged 9.26 percent compared with the same period last year.

The country saw an average of more than 1.07 million entries and 1.03 million exits per day during this period, up 14.2 percent and 4.5 percent year on year, respectively.

A total of 367,700 transportation carriers were inspected at the border checkpoints across the country, with the average daily number rising 12.95 percent year on year, according to the NIA.

The passenger volume at border check stations in major airports, including Beijing Capital International Airport, Shanghai Pudong International Airport and Guangzhou Baiyun International Airport, increased steadily during the holiday, while the tourist flow across land border check sites near Hong Kong and Macao rose notably, according to the NIA.

The daily arrivals and departures via the Gongbei Port, which links the Chinese mainland and Macao, reached record highs on May 2, with the number climbing to 481,300, and among which, 362,700 trips were made by tourists from the mainland, up 22.45 percent compared to the previous peak period.