A mass of cool air drifting down from China has given Chiang Mai an unseasonal taste of winter, even as the rainy season grinds on. The mild chill settled over the city on Monday morning, and tourists who’d made the climb up to the Doi Suthep viewpoint in Mueang district got an unexpected bonus with their skyline views. Up at the summit of Doi Inthanon in Chom Thong district, the temperature