This would be good for their economy in the long run and improve the safety of goods world-wide. Floating exchange rates allow countries to easily adjust to economic shocks, but are vulnerable to large value fluctuations that can harm investors.
The SDR is an international reserve asset that IMF members can use to purchase domestic currency in foreign exchange markets to maintain exchange rates. By making other currencies relatively expensive, the booming Chinese population is discouraged from importing goods from other countries, including India, the United States, and Europe, because the cost is artificially inflated.
India has the potential to manufacture and sell lower priced goods, if the Rupee could compete with the Yuan.
It is just the latest salvo in the U. China's economy depends significantly on its exported goods. For example, despite decades of dollar depreciation against the yen throughout the late twentieth century, the United States did not accumulate a trade surplus with Japan, and actually experienced a widening trade deficit.