To Lu Shu, his actions previously did give Lu Xiaoyu some doubt. For example, why swap the test tubes back to their original positions when they had already swapped it successfully?
This was because the old man advised them to swap the test tubes, and if the soul puppet was revealed, even if the test tubes were swapped successfully, the old man would know that the soul puppet had something to do with Lu Shu!
If the soul puppet went over right after the old man had just said the test tubes had to be swapped, it would be ridiculous to not be able to draw the link between Lu Shu and the soul puppet.
Lu Shu did not think that the old man would miss this point out. After all, in this world, there was a price to pay for underestimating someone.
So Lu Shu would rather swap the test tube back and ask the old man for help than to reveal the secret of Lu Xiaoyu and him. He did not have the slightest tinge of regret.
