REALISTIC! ....
Young Warriors is realistic b/c it is based on real General Yang .... U've also watched the other good version
Warriors of the Yang Clan ...
I can't guarantee good CGI, as most of it is bad, especially in older C-dramas .... But it is limited.
Some other good ones based in reality:
Scarlet Heart / Bu Bu Jing Xin --- The original and best version ... Excellent writing .... very little CGI and very little fighting, so Not a Wuxia.
Sound of the Desert --- Historical fiction ... very very good ... little CGI (but not good) .... more fighting than above ... still, Not Wuxia
Prince of Lang Ling --- Wuxia w/ little CGI ... very good story.... although has magic, still, more realistic than others.
Heavenly Sword and Dragon Saber (2002 C-drama) --- little CGI (but bad) b/c it is older .... since you liked Alex Su's WotYC, this is similar production.
Legend of the Condor Heroes (2008) --- very famous Wuxia novel ... done well ...CGI is not bad and too much.
Cuo Dian Yuan Yang --- Not exactly Wuxia, just some and very little CGI ... good story, realistic.