Qiongli didn't charge head-on into the silver-armored zombie that was rushing towards her. Instead, she moved to the side, angling the zombie in such a way that it gave Bai Xinran with Nannan in her arms a chance to get away.
"Run!" Qiongli yelled.
With a swift turn, Qiongli swung her blade at the silver-armored corpse. However, with a "snap," the blade broke in two. Her force had only managed to push the armored zombie back a little, a distance trivial to it.
The zombie raised its claw, fiercely swiping at Qiongli, simultaneously shutting down the path to Qiongli's right. Little did it know that Qiongli wasn't planning to go that way.
As is known, a blade has limited flexibility. However, when a blade breaks, its original flexibility multiplies. Reversing the broken blade, Qiongli thrusted it into the wall as per this concept.