Which provinces does Xu Xiake's footprint cover?

Xu Xiake has traveled to 16 provinces including Jiangsu, Anhui, Zhejiang, Shandong, Hebei, Henan, Shanxi, Shaanxi, Fujian, Jiangxi, Hubei, Hunan, Guangdong, Guangxi, Guizhou and Yunnan without any government funding. It reaches Putuo Mountain in Zhejiang in the east, Tengchong in Yunnan in the west, Nanning in Guangxi in the south and Panshan in Jixian County in Hebei Province in the north, covering more than half of China. What's more, during more than 3 years' travel and inspection, he mainly trekked on foot, even rarely rode by boat, and often carried his luggage on his own. Most of the places he visited were desolate backcountry or frontier areas with few people. He is not afraid of wind and rain, tigers and wolves, keeps company with Changfeng and clouds, feeds his hunger with wild fruits and quenches his thirst with clear springs. His life was in danger several times, and he risked his life and tasted the hardships of the journey.