nothing to do with insolvency, they invent this shit themselves with illusion that Chinese government will treat them as good boy(i.e fully compliant sort of shit etc), but no one really cares, not even the Chinese gov. Most exchanges  just  accept deposit through banking account directly.

just switch to Huobi, waste of time to deal with BTCChina, shitty service and user interface, they lost to competitors and lost trust of their customers when they switched to charging trading fee and invented this useless voucher system; their days are gone; You won't expect any startup to be run by a foreigner to be hugely successful in China, especially for startup in this particular tricky space, they are just too off the ground, you know what i mean.