So
There is MC's Shizu-then-Grand Shizu >>
Xu Qing
↑Shizun↑ ↓he called them in numbers lol↓
Xu Qing has 102 disciples >>
1st Disciple: Scar Man ; 12th Disciple: Muscle Man ; ?th Disciple: Mo JiuJiu
↑Shifu↑ ↑(Should be Shisu♂/Shigu♀)↑↓Shizhi⚥↓
1st Disciple Scar Man has 2 disciples >>
1st Disciple: Ta Xue (cat), 2nd Disciple: Yu Xiao (ML)
↑(Should be Shibo/Shishu♂)↑ ↑Shifu↑
Bai Tian (MC) now Yu Xiao's disciple
May has some mistakes as every terms are similar
@_@
Shizu is the master of your master aka your grand(teacher)father
Shizun and Shifu is literally same (Master); it's just Shizun way more formal
Shisu/Shigu is Martial Arts Uncle/Aunt. But Shishu can be more general
Shixiong/Shige is Martial Arts Older Brother, Shidi is Younger Brother
Shijie is Martial Arts Older Sister, Shimei is Younger Sister
Shizhi is Martial Arts Nephew/Niece
Edit: Shizu said to be master of your master but honestly I rarely found this term
(because most story has them dead already). Usually it's Grandmaster/Elder.
Add 'Grand' for every times Bai Tian called them lol.
He's technically the 'great grandchild' of the martial arts family.