The watermelons are here. It's hard to find a watermelon that's anything but delicious in summer in Beijing; we've gotten a bad one only once, though we could probably repeat the feat if we bought from the guy who sells fruit from the broken-down minibus right outside our apartment, because his fruit is always bad (and criminally priced).
Instead, I bought this one from the Lohao City organic-food market. It was so ripe and tender that when the knife cut into it, it obligingly split itself in half.