"In responding to the risk of the market's price fluctuation, we must resolutely crack down on hoarding, malicious speculation, and the bidding up of prices."
Chinese policymakers have stepped up efforts to curb surging commodity prices that have squeezed manufacturers' margins in the world's second-biggest economy to prevent the price increases from being passed on to consumers.
In recent months, authorities have been warning against speculative trading, auctioning off base metals reserves, and launching probes into prices and reserves of iron ore, coal and urea, among its measures to counter tight supplies.
China's state planner had announced on Friday plans to boost its capacity to store national coal reserves to around 600 million tonnes, approximately 15 per cent of annual coal consumption.
Separately, another ministry spokesperson Tian Yulong said that China currently has opened 961,000 5G base stations, in the country's bid to accelerate and expand its 5G network buildouts.