As Shanghai World Expo enters June, the number of tourists is so large that group tours should be booked at least 20 days in advance, according to Dongfang Daily.
Since the Shanghai World Expo entered its second, popularity has surpassed expectations and the number of daily visitors has exceeded 400,000. The number of reservations recorded by ctrip.com in the first week of June is nearly equal to the total number for all of May.
