Legend of Fairy Sword and Chivalrous Man 7 Corrosive Grass Collection Raiders
If you want to collect erosive grass, you can collect it in the innermost part of the lower layer of the poison barrier, and you can brush the fruit of the spirit to upgrade the imperial spirit.
In the follow-up task of searching for eroded grass in Jiaoquan Yincun branch line, there will be a prompt to inform Sang Mei about the situation of the elderly.
You can also look next to their lounge.