Zhang Xueyan, owner of Zibo Big Chimney Grilled Fish & Barbecue, serves dishes at her restaurant in Zibo, Shandong province, in February. The popularity index of Zibo surged 137 percent year-on-year during this year's Spring Festival, or Chinese Lunar New Year holiday, making it a magnet for tourists, latest data from online travel agency LY.com showed. Zhang Xueyan, owner of …
