|Created by Shi Yukun||Hometown Huangzhou|
|Appearances The Seven Heroes and Five Gallants and its sequels|
Nickname(s) Earth-Piercing Rat (徹地鼠)
Sworn siblings Lu Fang, 1st brother Xu Qing, 3rd brother Jiang Ping, 4th brother Bai Yutang, 5th brother
Han Zhang is a fictional character from the 19th-century Chinese novel The Seven Heroes and Five Gallants. Nicknamed "Earth-Piercing Rat" for his expertise in land mines, he had a military background.
Han Zhang, along with sworn brothers Lu Fang, Xu Qing, Jiang Ping and Bai Yutang were known as the "Five Rats of Hollow Island". Han was ranked 2nd in age, and probably was the 2nd best fighter after Bai Yutang, as he not only carried a broadsword but also poisonous darts, which he used to injure Judge Bao's officer Ma Han. Relatively introverted, Han preferred to act alone and was the last of the "Five Rats" to surrender to the government.