I Disappeared for Three Years, and My Portrait Is Displayed in My Girlfriend's House

Ye Yu, who has lived incognito for three years, is a talented scholar and is deeply involved in scientific research! He was secretly summoned to the mountains of northwest China to develop a new type of stellar engine, which is top secret! Three years later, Ye Yu, who had temporarily completed his scientific research tasks, returned to the city and met a cute little girl. "Uncle, you look just like my dad!" Ye Yu, who has been dealing with drawings and technology all year round, was touched by the softness in his heart. "What about your dad?" The little girl blinked: "My father passed away..." The soft-hearted Ye Yu took the initiative to send the little girl home, but was confused when he opened the door. There is actually a photo of myself hanging on the wall! Wait, isn't the photo next to my ex-girlfriend Bingbing?