While being in China, I had to survive the humid heat and was really glad that I had packed these shirts from Primark. They were my life savers during these hot weeks. Whenever we went on a sightseeing trip and toured around the country, I wore one of those distressed shirts. In combination with my favourite black capri pants and a tank top, these shirts gave me some coverage from the sun, kept me dressed also for visiting temples and worked well hiding possible signs of sweat.
I am not sure if you can still get them in stores now, but I bought them in the end of June, so they might be sold out.