A third-year college student has successfully traded a pair of silver rings worth 200 yuan ($31.76) for 300,000 yuan to build a school building for rural Chinese children.

Yang Aijing, a female student from Guizhou Minzu University in Southwest China's Guizhou province, started a "rings for school building" charity program on Weibo at the beginning of February.

Two weeks later, the rings had been traded for a pair of diamond rings worth 300,000 yuan thanks to the coordinated efforts of Internet users from Northwest China's Xinjiang Uygur autonomous region, Shanghai and Beijing.

Tuesday morning an anonymous Shanghai netizen, who had volunteered to pay 300,000 yuan for the pair of diamond rings to fund the construction of the school building, notified Yang that the first 100,000 yuan had been wired into the designated account set up by the township government of Kunzhai in Nayong county in Guizhou. As agreed between the good Samaritan and Yang, the rest of the money will be wired later through two separate transactions.

The donor's identity remains secret and Yang said they communicated mainly through Weibo private messages and a single phone call.