Wang Chen and the other two's most consistent source of income was gathering herbal medicine in the mountains.
If they set aside herb gathering for other matters, they would be cutting off their income.
Currently, the fish pond business required someone to be present every day, even if they didn't do anything, they still needed to keep watch.
Moreover, besides looking after the fish fry and the poultry, they also needed to find time to build dwellings, as well as barriers against animals or thieves.
All of these tasks required time to manage.
Therefore, for the short term, they likely couldn't spare the time to gather herbs.
Not gathering herbs meant no income.
Without money, it would be hard to sustain the operation of the fish pond business.
This was a two-way cycle.
If they could solve the issue of gathering herbs, it would result in a virtuous cycle, not only earning their initial investment back but also gradually developing more money from the fish pond.