The top five scores in the past three years are: Guotai Li Shuang Bond A, Guolian An Desheng Zengli A, E Fund Enhanced Bond A, China Merchants Aberdeen Zengli, Baoying Enhanced Income A.
Some of these funds are divided into A and B, corresponding to two different subscription rates. Here, I directly combine them into a type of fund.
You can find five-year performance in Morningstar.com, but I think many excellent debt-based companies have been issued for less than five years, and the five-year index can't accurately reflect the performance of debt-based. I suggest you refer to the results of three years+1 year as the basis for your choice of debt base.