A MAJOR Chinese commercial bank has re-entered the mortgage-backed market. China Construction Bank, the country's leading property lender, issued its second batch of mortgage-backed securities yesterday, issuing two kinds of bonds with a total value of 4.16 billion yuan (US$565.22 million) to institutional investors. The priority bond has a floating interest rate based on China's one-year term-deposit rate. Investors will get their proceeds and principal returned before those of the subordinate bond.