The price increase on April 1 and the price drop on the 21st in response to changes in Tesla's price Lei Jun said in “China's Economic Gravity Field”: “They are very sensitive in responding to market conditions in 21 days when they say that it will rise or fall if it will go down. I'm impressed.” Referring to the development of electric vehicles, he said, “What Chinese cars are currently undergoing is intelligence. Many foreign car manufacturers will also visit and test drive our cars in China. This exchange and cooperation can promote the progress of the industry and ultimately benefit consumers.”