Zhang Heng was willing to guide Terufelos because he had a good impression of him. That was why Zhang Heng wanted to help to grow his reputation. Other than that, he needed a heavyweight fighting performance to help him ascend to the throne of champions.
Although getting consecutive victories was an enjoyable thing, the audience might get bored if nothing exciting was presented to them. When that time came, the audience would wish for a challenger powerful enough to pose a threat to Zhang Heng. And now Terufelos was playing this role.
And more importantly, Terufelos found that he could not say no to Zhang Heng's plan. It was not because he could not let go of his fame. Still, Zhang Heng also told him frankly that if he chose to concede when they were evenly matched, the audience would be disappointed by him. There was a high chance that they would be asking the organizer to execute Terufelos.