BEIJING, April 22 (Xinhua) -- The central parity rate of the Chinese currency renminbi, or the yuan, strengthened 8 basis points to 6.7035 against the US dollar Monday, according to the China Foreign Exchange Trade System.

Illustrations: CGTN

In China's spot foreign exchange market, the yuan is allowed to rise or fall by 2 percent from the central parity rate each trading day.

The central parity rate of the yuan against the US dollar is based on a weighted average of prices offered by market makers before the opening of the interbank market each business day.