Stand-In for a Wealthy Family: a Fine of 100 Billion for a Full-Level National Warrior

In order to save her relatives, an orphan girl from a mountain village disguised herself as the real daughter of a top rich man who was living abroad. He wanted to be a well-behaved rice bug, but accidentally shocked the entire upper class society with his landscape paintings, ancient medical skills and lost calligraphy. The paranoid boss who doted on his wife excessively received a "100 billion fine" from her.