What is the relationship between government bond index and corporate bond index?

The relationship between government bond index and corporate bond index is indirect. Government bond index is a sample of all fixed-rate government bonds listed on the exchange, weighted according to the issuance of government bonds. Government bond index has basically formed a trinity index system of stocks, bonds and funds in the national securities market, which aims to reflect the overall changes in the bond market and is an indicator of the price changes in the bond market. The corporate bond index is only indirectly related to it.