In which episode of Princess Pearl, Wei Zi's eyes saw it again?

In the 83rd episode, Erkang took Wei Zi to visit famous doctors in Luoyang, but it didn't work. On the way to the county, they met men in black. These men armed with long knives claimed that they would be ordered to kill. In the fight, Erkang and Yongqi were both cut. Xiao Jian Erkang and others immediately resisted with all their strength, killing people, and finally repelled the men in black. When everyone returned to Luoyang, Erkang was badly injured and bleeding. Wei Zi was very anxious, and Xiao Jian sewed up the wound again. After talking with Lang Shining, the emperor expressed his thoughts and forgiveness for several children. They suddenly found that Wei Zi could move freely and her eyes recovered.