1. On the day I arrived, Chiang Mai was shrouded in fog, and the plane couldn't land. I had to return to Bangkok, wait for several hours, and then fly back to Chiang Mai – it was awful. March/April is really not a good time to go; the weather is bad, very hot, but there's no blue sky. Apparently, it's a local custom to burn the ground every year around this time, probably for fertilizer. 2. I bought travel insurance through Ctrip, but Ctrip only sells it and doesn't handle after-sales service. If something happens, you have to contact the insurance company, but their phone number is unreachable from overseas! 3. It only costs 120 baht from the airport to the city center, and 160 baht from the city center to the airport. However, Ctrip's airport transfer service is 88 RMB. You can calculate the price difference. The service is refundable, but I don't know if it's a refund of money; you have to call home to confirm beforehand. I accepted it and didn't get a refund. 4. There are too many temples in Chiang Mai. You can walk around, but for the farther ones, it's best to take a vehicle. A taxi costs about 20-40 baht per ride; tuk-tuks are more expensive, and you have to bargain. In Thailand, an average person spends about 40 baht on a meal outside, while places catering to tourists, like those near Houhai, charge around 120 baht per dish/rice. If you don't bargain when buying things or taking transportation, you'll overpay. The average Thai person earns about 9,000 baht a month, while those with higher education earn around 12,000 baht. Think about it, we'd be easy prey if we went there! 5. Overall, it's a good place. The people are very friendly (partly because they're in it for the money, of course). The area looks a bit chaotic, but it's a vibrant city.