Genius vs Gentle

A rich merchant daughter Tang An decided to marry Song Wei Hu from another county. She did know that he have slight autism. However he is genius in mathematics and he works in the land surveyor bureau. She was reject by her husband however his grandmother loves her for she is willing to marry her grandson. It took her quite sometime to gain his trust and soon when he gets use to his wife. His cousin Ker Wei Zu who grows up with him comes to live in the mansion. He soon likes Tang An who is gentle and kind. A different type of girl he see everyday.