South Korea's financial regulator said Thursday that it will push to mend the structure of household debt by supporting extension of mortgage lending with longer maturity and spurring the sale of covered bonds. The Financial Services Commission (FSC) said in its 2014 policy goals that it will also urge local banks to increase the portion of fixed-rate loans and encourage households to change the practice of repaying only the interest on the mortgage loans without paying out the principal for an extended period.