Gao Yiming was the Seventh Elder of the Thousand Hands Sect in Fucheng, a Half-Step Martial Master at the peak of the Martial Master Realm's Ninefold level, an authentic expert.
For a martial artist with the skill level of the Fourfold Realm, with Gao Yiming's power, let alone three minutes, even enduring one minute would be difficult to imagine.
Yue Hengsong worried that Gao Yiming might take the opportunity to come down hard on Han Yu under the guise of sparring, and although it wouldn't endanger Han Yu's life, he feared he might not be able to hold back and would severely injure Han Yu instead.
In fact, Yue Hengsong's concern was somewhat redundant. Gao Yiming indeed intended to teach Han Yu a lesson, but he merely wanted to test Han Yu's strength.
If Han Yu truly possessed the strength to effortlessly overpower Liang Chao, then there was indeed no need for him to kill Liang Chao, and it was clear that the assailant who acted in the hospital was someone else.