When it was Guan Tang's turn, Yin Bin's smile deepened as he said, "Come, Cheng Che. This is Guan Tang. She's the most important person to you. Your mother and her mother were best friends in the past. Back then, the two of them got pregnant at the same time. Just like in the dramas, both of them promised to marry their children to each other. This is also your mother's wish."
Yin Bin sighed as he continued to say, "Your mother passed away early. Guan Tang's mother also passed away when she was ten years old. Your… Your Aunty Guan is Guan Tang's biological aunt so Guan Tang grew up in our family as well. Your Aunty Guan personally raised Guan Tang. Since your grandfather also acknowledged Guan Tang as his granddaughter-in-law, we naturally raised her like our own as well."
Yin Bin saw that Cheng Che had no intention of acknowledging Guan Ning as his mother so he referred to Guan Ning as 'Aunty Guan' instead.