There are probably many more Generation 25s… but these is my grandfather and all his brothers according to the jiapu.
#1 Lam Yaogan 蓝尧干
#2 Lam Yinggan 蓝迎干
#3 Lam Kaigan 蓝恺干
# 4 Lam Qiaggan 蓝强干
# 5 Lam Tonggan 蓝通干
# 6 Lam Nangan 蓝楠干
#7 Lam Pugan 蓝溥干
#8 Lam Tiegan 蓝铁干
#9 Not Listed
#10 Lam Henggan 蓝恒干
#11 Lam Ang’gan 蓝昂干
#12 Lam Meigan 蓝楣干
#13 Lam You’gan 蓝有干
#14 Lam Nenggan 蓝能干
#15 Lam Jiangan 蓝坚干
#16 Lam Jinggan 蓝井干
#17 Lam Ronggan 蓝荣干
#18 Lam Zhonggan / 蓝中干
#19 Lam Yigan / 蓝毅干
#20 Lam Chaogan / 蓝超干
#21 Lam Wen’gan / 蓝文干
#22 Lam Sungan / 蓝荪干
Lan Hanxian (蓝灏贤) adopted his brother’s, Lan Hanxian (蓝灏贤) third son, Lam Kaigan 蓝恺干 because initially he did not have any sons of his own. He made the decision after winning the lottery. After the adoption, Lam Kaigan 蓝恺干 and sent him to Japan to study.
#1 Lam Kaigan 蓝恺干 (Adopted 3rd Son of Lan Haoxian 蓝灏贤)
#2 Lam Zaigan / 再干
#3 Lam Lian’gan / 联干
#4 Lam Jiegan / 接干