Consigning the mushrooms to Senior Brother Liu for sale definitely wouldn't be as good as finding customers directly, but since there weren't many goods now, Yan Fei didn't pay it too much attention.
Moreover, when it comes to business, sometimes being too calculative isn't good; relational networks are sometimes more important. He planned to promote Agaricus bisporus cultivation in the countryside, and though he hadn't encountered any problems with his current crops, he certainly couldn't guarantee the absence of problems in the future.
The feed used for his cattle farm was enhanced with 'special feed,' so the manure was very effective. But if it was promoted elsewhere, others definitely wouldn't achieve the same effect. Once issues arose with Agaricus bisporus, he didn't think he could resolve them all as a half-baked master; wouldn't he then have to consult Senior Brother Liu?