Beijing pledged more than $60 billion for infrastructure projects in Pakistan. The costliest 2,655km long railway project, known as Mainline-1 (ML-1) up-gradation for $6.8 billion got approved under China’s BRI. The budget for ML-1 is almost equal to Pakistan’s entire development for FY 2020/21.

Source

https://www.reuters.com/article/pakistan-china-cpec-railway-idUSL4N2F740A