The problem is during lunchtime, they can't leave work early to buy groceries and come back to cook for him. One reason is it will definitely distract them from their work at the company; the other is that it would be too rushed.
So, Chen Feng either goes out to eat at noon, orders takeout, or cooks for himself. If not, he'll have to hire someone else to do it.
Chen Feng is so lazy now that he certainly doesn't want to go out to eat. If he orders takeout, it might not be healthy or sanitary, and the taste might not be great. Even if it's from Fuman Building, eating the same dishes every day would get boring, and they lack the home-cooked flavor.
Moreover, after both women go to work, household chores obviously cannot be cared for either, and idle Chen Feng certainly won't be doing them.
So, after discussing with the two women, Chen Feng can only hire a skilled cook and housekeeper to take care of their lunch and do household chores.