After registration, you get free 410 RMB (about 70 USD).
When you choose the plan of 99 RMB, you can use it for 4 months for free.
Another plan you can even get 1000 RMB for free, I have not tried that.
Each cloud host (99 RMB plan) gets:
OS: Linux, I choose Ubuntu
Two public IPs: one for telecom ISP, one for unicom ISP
CPU: 1 vCPU
Mem: 1 GB memory
Disk: 40 GB system disk, 20 GB data disk
Bandwidth: 2 MB unlimited
Test downloading:
root@ubuntu:~# wget http://cachefly.cachefly.net/10mb.test --2013-12-28 16:57:46-- http://cachefly.cachefly.net/10mb.test Resolving cachefly.cachefly.net (cachefly.cachefly.net)... 204.93.150.151 Connecting to cachefly.cachefly.net (cachefly.cachefly.net)|204.93.150.151|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 10485760 (10M) [application/octet-stream] Saving to: `10mb.test'
100%[======================================================================================================================================>] 10,485,760 243K/s in 43s
2013-12-28 16:58:29 (236 KB/s) - `10mb.test' saved [10485760/10485760]
Test DISK IO:
root@ubuntu:~# dd if=/dev/zero of=test.file bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 55.2517 s, 19.4 MB/s
Both network and disk IO are not good. Anyway it's free so far. And you know, Chinese servers are generally expensive.