It is equated monthly instalment .It was also not paid as direct amount .It was indirectly paid by concession on the tax on the imports and exports by China through this rout for 2 years I think.I am aking that have to paid for this year EMI interest?
https://timesofislamabad.com/05-May...an-would-have-to-repay-back-annually-for-cpec
https://tribune.com.pk/story/1583286/6-can-pakistan-pay-cpec-loans/
https://www.dawn.com/news/1426505