I think joining is a shortcut for the simple reason that it is the most efficient. The ownership of "Dezhou Brand" belongs to Dezhou Braised Chicken Group. Twiggy and Li Ji are actually masters of the predecessor of Huangqi Chicken Group, separated by their descendants. The taste is better than that of the group simply because of the difference in scale and technical research and development strength.
Although joining is also done by yourself, the degree of technical support will be very different.