A zero-sum mentality about China-US relations is reflected not only in the thinking of some US politicians, but also in a new survey conducted by the Pew Research Center

A quarter now name China as the world's leading economy, up from 14 percent the last time the Philippines was surveyed

The move serves the purposes of the UNESCO, he said

"On the visit to Hefei, I found it was not very developed but thought it would have great potential

This represents a dramatic shift since that question was last asked in 2015