The Baiyun Mountain is the highest peak in the Province of Jilin at 2691m. Jilinhada, Longgang and Zhang Guangcai are the other mountain ranges in Jilin. The river Yalu and Tumen flowing in the southwest of Jilin Province and the river acts as a border to North Korea. Siping, Jilin City, Baicheng City, Changchun Songyuan, Yanji, Tonghua and Liaoyuan are the other important cities of Province of Jilin. The continental monsoon climate has an average rainfall of 350 to 1000mm in Jilin and the province has at times harsh winters.