chapter 30 Identify the quality of elixirs

Ten minutes later, Edison Li arrived on the ninth floor of the building.
This is the most difficult area to access in the Longteng Medicine Company headquarters.
Even if Edison Li, the helmsman of Longteng Medicine Company, needs to inform the staff inside before entering because this is the office area for the Research and Development (R&D) department, including laboratories.
The R&D department is the core department of Longteng Medicine Company and is responsible for...