China Needs U.S. Guarantees for Treasuries, Yu Says (Update2) By Belinda Cao and Judy Chen Feb. 11 (Bloomberg) -- China should seek guarantees that its $682 billion holdings of U.S. government debt won’t be eroded by “reckless policies,” said Yu Yongding, a former adviser to the central bank. The U.S. “should make the Chinese feel confident that the value of the assets at least will not be eroded in a significant way,” Yu, who now heads the World Economics and Politics Institute at the Chinese Academy of Social Sciences, said in response to e-mailed questions yesterday from Beijing. He declined to elaborate on the assurances needed by China, the biggest foreign holder of U.S. government debt.