I Only Wanted to Slack Off, but the Zhu Family Overheard My Thoughts

By chance, Zhou Jie transmigrates into the body of an old man during the Hongwu era. To his surprise, the System tells him that as long as he slacks off, he'll receive rewards. If Zhu Yuanzhang kills him, or if he waits for this body to die of old age, he can return to modern times and live as a wealthy gentleman.

However, his attempts to slack off don't go smoothly.

What? The Northern Yuan has invaded? Don't ask me, I'm slacking off!

What? The court has no money or food? Don't ask me, I'm slacking off!

What? The court wants to develop new firearms? Don't ask me, I'm slacking off!

What? The court plans to conquer foreign lands? Don't ask me, I... Holy crap! Lao Zhu, are you the one who transmigrated?!