Wang Zhengguo was prepared for this. He knew his actions would put Wang Zhengjun in a difficult position.
If he lent, there was the possibility of the borrower never repaying, which could attract more people with similar intentions.
If he did not lend, or had no grain to lend, it would absolutely offend people. There were plenty of narrow-minded people, and he could easily predict the repercussions. To maintain any form of influence would be as unattainable as a daytime dream.
Perhaps the similarity of their vindictive natures proved that they were indeed blood brothers.
Despite being siblings, Wang Zhengguo held the safety of his family and the people of Wanglou Brigade above Wang Zhengjun. He could not let Wang Zhengjun wreak havoc over the brigade, nor did he want to let him have his way.