Xie Yunlin walked into the living room with Xie Jinfei and Xiang Bingzhi, and greeted Gu Junzhu politely, "Fifth Brother."
As scions of the most powerful families in Beijing, Xie Yunlin and Gu Junzhu didn't know each other well, but they had known each other since childhood.
In terms of age, Xie Yunlin was actually a few years older than Gu Junzhu.
But Gu Junzhu was one generation above him.
Xie Yunlin's grandfather had once served under Gu Junzhu's father.
Xie Yunlin addressed Gu Junzhu's father as Grandfather.
So by rights, Xie Yunlin should be calling Gu Junzhu Uncle.
But Gu Junzhu was too young, and Xie Yunlin couldn't bring himself to say it.
Not only Xie Yunlin couldn't say it, many young masters who were in the same situation as him also couldn't bring themselves to say it.
So, it became conventionally agreed that, regardless of whether they were older or younger than Gu Junzhu, everyone addressed him as "Fifth Brother" or "Fifth Master".