OKCoin and BTCC 24 hour market volume doubles over yesterday - are the Chinese fully back in the game?

From Bitcoin Markets tabulation (https://coinmarketcap.com/currencies/bitcoin/#markets):

Yesterday (May 30th):
16 OKCoin.cn $21,094,400
17 BTCC BTC/CNY $20,464,500

Today (May 31st):
9 OKCoin.cn BTC/CNY $43,009,400
11 BTCC BTC/CNY $37,288,600

(I just happened to save yesterday's data so I could track the South Koreans - this was a surprise.)