Why is there political protest in Nepal?

Nepal's former chief justice Sushila Karki took office as prime minister of the interim government at the presidential office on Friday evening, following K.P. Sharma Oli's resignation. China on Sunday extended congratulations to Karki on becoming prime minister.

The death toll from last week's nationwide protest has risen to 72, Nepal's Health Ministry said on Sunday.

So why is there a political protest in Nepal? Let's take a closer look.

Video making by Guo Yao (Mekong News Network, YICC)