Why did the IMF upgrade China’s economic forecast?

The International Monetary Fund has raised its global growth forecast for 2025, with China getting the strongest boost among major economies. The IMF now projects China’s economy to grow by 4.8 percent this year, up from its four percent forecast in April’s World Economic Outlook. Why is the IMF upgrading China’s economic forecast? To what extent is the rebound in China’s growth tied to fundamentals, versus external factors like the tariff truce with the U.S.? What sectors of China’s economy are likely fueling this upward revision?