By 7pm on July 6, 451,500 visitors packed the Expo site, 172,200 of them on tour groups.

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Among Tuesday's visitors, 56,030 visitors used free tickets Shanghai government distributed to local residents.

A total of 53,710 tickets were sold on site, with 17,150 night admissions.

Houtan Gate received about 81,000 visitors, Changqing Road 71,000, and Shangnan Road 76,000 and Gaoke Road W. 54,000.

By 5pm, 75 shows were staged, attracting 63,000 spectators.

By 4pm, five medical stations in the site received 445 visitors. A total of 6,323 volunteers served on the site.

According to the Expo Bureau's Ticketing Centre, some 160,000 group visitors will visit on Wednesday.

Expo 2010 organizers have started offering group discounts to Chinese students and foreigners who present their student ID documents. At least 15 must take part and group leaders should buy tickets at authorized group ticket agencies: Shanghai Travel Logistic Center and Shanghai Yangpu Xiuyang Travel Co Ltd. Group members should bring identity documents.

Souvenir shops at the second floor of the Expo Boulevard have recently started selling digital camera memory cards and batteries.