How do you get Yue Yings level 11 weapon in Dynasty Warriors 4 Extreme Legends?

Defeat the Five Tiger Generals (Guan Yu, Zhang Fei, Zhao Yun, Huang Zhong, Ma Chao).

Keep all or most Tiger Tanks safe.

Do not move too ahead of the tiger tanks, because enemy attack troops

will appear and attack the tiger tanks if you are too far away, and

sometimes close up gates behind you and block you from them, preventing you

from going back to rescue them.

Move slowly, this is a 60 minute stage, and a weapon that doesn't have a

time limit to unlock. So just walk alongside the tiger tanks and move with

the same pace as them.

It is acceptable to lose 2 tiger tanks, not more. Do this mission on Expert Mode