The 30% discount on the first home loan means that when you apply for the first home loan, the bank gives you a preferential loan interest rate, which is 30% higher than the benchmark interest rate announced by the People's Bank of China. For example, the benchmark interest rate for loans with a term of more than five years is 7.05%, and if it is 30% on this basis, your interest rate is 7.05%*0.7=4.935%, and the interest for each loan of 1 ten thousand yuan is 1 year.