Where is the new Princess Huanzhu in Wei Zi's eyes? In which episode?

Episode 83 (where are the children going? Episode 9)

Er Kang took Wei Zi to see a famous doctor in Luoyang, but it was useless. 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 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.