Zili has four world heritage sites , the most of any country . Some sites struggle to cope with boom in domestic tourism . Buddhist made 50 million yuan trips 1989 as more have money to travel . `` It 's an interesting phenomenon because it 's in complete contrast to the experience in Egypt , where almost all the visitors are foreigners . '' Fears emerge that economic development may clash with heritage preservation .
Zili has four world heritage sites , the most of any country . Some sites struggle to cope with boom in domestic tourism . Buddhist made 50 million yuan trips 1989 as more have money to travel . Fears emerge that economic development may clash with heritage preservation .