 Zhou <unk> first appears as a fierce , impulsive young man who rides his horse into the thick of enemy <unk> wielding a long spear . He later dies in battle against the Liao Dynasty . After his son 's death , Zhou retreats to the <unk> Temple for a long morning period . He later takes seven @-@ year @-@ old Yue Fei as his adopted son and sole heir years after the boy 's father drowns in a great flood : 
