SHANGHAI, June 16 (Xinhua) -- Yu Zhengsheng, Party chief of Shanghai, the host city of the 2010 World Expo, met Wednesday with Vicente Gonzalez Loscertales, secretary-general of the International Exhibition Bureau (BIE).

Yu extended gratitude to Loscertales for his assistance and support given to Shanghai in hosting the World Expo. He said the Expo operation is getting better and better as the organizer has been committed to resolving various problems found in the operation and strengthening communication with all participating countries and organizations.

Loscertales said after almost six weeks, the organizer has made lots of achievements in improving the work and increasing the efficiency of the Expo operation.

Running from May 1 to Oct. 31, the Expo, with the theme "Better City, Better Life," has drawn participation by an unprecedented 189 countries and 57 international organizations.

The number of daily visitors to the Expo Park reached a new high Tuesday as 546,700 people entered the Park, breaking the earlier record of 524,900 set on June 5.