After introducing debt capital financing, how to calculate the beta value of all assets of the company?

There are two models to determine the β coefficient. One is CAPM model (capital asset pricing model, also known as stock market line model): E(Ri)= RF+β I (RM-RF), where E(Ri)= expected rate of return of asset I, and the other is market model: E(Ri)=αi+βiRm.