C26 Changed to Honorifics

Old Master Gu slapped his leg and glanced at Gu Tianchen doubtfully. At this moment, he noticed a problem, "Why do you want to go out for an internship, instead of Gu Cheng coming with you, it's number four?"

"Because I have to vouch for it. Otherwise, Grandpa, how could you let them go so easily? " Gu Tianchen put down the bone china coffee cup leisurely and replied the old man with a smile