I've done some research, will share:
seems to me like a rest of huge virus or spam traffic.
http://www.alexa.com/data/details/traffic_details?&range=2y&url=http://tbxt.com/
The traffic culminated 1 year ago, if it got in April this year 1M traffic, 1 year ago it would have to be like 100M per month.
If it would be type-in traffic, the .net version would have some residual traffic too, but does not have. Also if it would be type-in traffic, no way the com.cn version would be free, as it would have also big traffic (according my experience .com.cn version of popular .com Chinese domain get about 1/40 of the .com traffic).
BTW the original owner let this domain drop (at least according whois.sc).