The planned structure wasn't too complex—after all, there were only a few sewer outlets to deal with. When the time came, buying a few pipes and connecting them to the sewer system would do the job.
The creek was too small, and Zhao Guang worried it might clog and affect the drinking water supply.
So Zhao Guang planned a septic tank at the very bottom.
"Such a large septic tank would take at least several years to fill up with just three manure machines."
Zhao Guang nodded in satisfaction. A few days later, whether it was cleaning the septic tank or digging a new one, that would be a problem for another day, as there was no hurry. So, that was the plan, but there were quite a few things missing.
After giving instructions, Zhao Guang returned to Earth.
"Cement, shovels, probably need a ladder too, forget it, just buy a whole set."