Great Tang: Father-in-Law, I've Truly Run Out of Ideas

From the start, Tang Tianpeng became Li Shimin's son-in-law. Unlike other protagonists, the hapless Tang Tianpeng had no peerless System, but he did have a beautiful princess for a wife.

His wife wanted delicious food. Tang Tianpeng: I'll build warships and explore the Americas.

His wife's friend fell ill, and his wife was heartbroken. Tang Tianpeng: I can cure her.

His wife loved poetry and literature. Tang Tianpeng: Actually, I'm the greatest literary talent in the Tang Dynasty.

His wife had no more problems, but...

His father-in-law had taken a liking to him.

Not in the way you're thinking...

"Tianpeng, I hear you have a technique for increasing grain yields?"

"My son-in-law Tianpeng, I hear you have a method for smelting iron?"

"My dear son-in-law, I hear you have a way to make our country strong?"

"Good son, give your father a hint. Just how many other techniques do you know?"

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.