By Yang Feiyue | China Daily | Updated: 2024-05-21 07:08 Visitors walk in the ancient town in Tianshui, Gansu province, on May 1. WANG ZIXUAN/XINHUA Domestic travelers' growing preference for niche destinations and experiences has ignited the huge tourism potential of many of the country's lesser-known travel spots. From last year's barbecue craze in Zibo, Shandong province, to this year's …