Fan Zijin couldn't stand Mu Yangling's methods and principles of managing the Harvest Grain Stores and the farmsteads. However, those were their own businesses. At most, he would mock them from the side and wouldn't interfere, just like how they wouldn't have any objections to how he managed his businesses.
However, Mu Yangling was the one who wanted to open the factories this time, so she obviously had to be personally in charge. If he participated in it, regardless of whether the products could be produced in the end, he would definitely not be able to stand Mu Yangling's management. Mu Yangling would definitely not be able to accept his method of running the factories, so in the end, the two of them would definitely quarrel, just like when they were young.