The other day, China Unicom announced that from May 12 to May 31, all prepaid users who are roaming in the five heavily- stricken earthquake areas including Chengdu and Mianyang in Sichuan will be presented with RMB 200 phone charges to show support for the current disaster relief work. Unexpectedly, some opportunists took advantage of this opportunity to purchase a large amount of Unicom card numbers at more than RMB 10 each, activated them and then brought them to Sichuan, waiting for Unicom to present them with phone charges so as to make a fortune.