Yep, all withdrawals are on hold, not just pts. Luckily, I had withdrawn all. But, the message at present is as follows:
BTC withdrawal is disabled 因系统负荷较高，虚拟币提取暂停，稍后开启，请给我们一点时间，感谢您谅解和支持。
Google Translated, this comes up as: "BTC withdrawal is disabled due to high system load, virtual currency extract suspended, open later, please give us a little more time, thank you for your understanding and support."