Islamabad: Prime Minister Shehbaz Sharif has said that Pakistan-China All-Weather Strategic Cooperative Partnership is a cornerstone of regional stability and prosperity.In a post on X handle, Muhammad Shehbaz Sharif said the historic and productive visit of Chinese Premier Li Qiang will further strengthen and deepen Pak-China friendship.He said both the sides will review progress on existing initiatives, especially CPEC and also explore new avenues of mutually beneficial cooperation during the visit of the Chinese Premier.