The debt base is basically positively related to government bond index. As government bond index rises, the debt base will generally rise. On the contrary, when government bond index falls, the debt base will generally retreat.

Government bond index: All the fixed-rate government bonds listed on the exchange are sampled and weighted according to the issuance of government bonds. The purpose is to reflect the overall changes in the bond market, which is an "indicator" of the price changes in the bond market.

Debt base: bond funds, also known as bond funds, refer to funds that invest in bonds. By pooling the funds of many investors, it makes a portfolio investment in bonds and seeks a relatively stable return.