Jax and Lucille remained behind to see how Ning was going to deal with the Cinder Ant.
Jax was ready to move, to save Ning should he need that help. However, given how strong he knew the man to be, he was more or less relaxed at the moment.
Ning arrived next to the Cinder Ant and suddenly dug his spear into the ground. Then, he vaulted over the ant, using that opportunity to attack one of the 3 spots that would be on its body.
The first one was on its back.
Ning immediately spun his body in midair, and stabbed downward at the ant, striking precisely on the first of the 3 critical spots on the ant's body.
Ning landed on the other side of the ant, while the ant groaned in pain. The critical spot wasn't just an arbitrary spot on the monster's body, but rather one of its weakest points.
Upon landing, Ning quickly turned and struck the side of the monster with his spear. The spear slammed the ant upward, revealing its underbelly.