Usage of God Zhang Fei (Campaign Mode)

This is actually a complaint I found in China website about God Zhang Fei.
But I feel its worth to share.
Original article is found here:
http://wan.renren.com/bbs/thread-881339-1-1.html

How the GZF works

GZF has a unique buff that is unknown to many. It comprises of 

1) Round 1: Reduced Damage Taken (DEF) by 40%

            Reduced Damage Inflicted (ATK) by 40%

2) Round 2: Buff Removed based on current stats

If you look at the description, you will definitely benefit by placing ZGL or GCR before GZF to ensure that the Base damage of GZF improves

Example, using GCR adds 30% Attack and Def buff.

1) At round 1:
Reduced damage, attack + GCR buff

                60%*1.3 ~ 78% Defense

                60%*1.3 ~ 78% Attack

2) At round 2:

Since, it was treated as 60% previously. So the formula is divide by 6 multiply by 10. 

Hence           78/6*10 ~ 130% Defense

                78/6*10 ~ 130% Attack

I do not know how the forum he managed to get 50% damage. but i got 30% here. Please note that the 130% damage had hence become the default damage(ie 100%) and hence subsequent rounds with GCR buff becomes:

               130*1.3 ~ 169% Defense

               130*1.3 ~ 169% Attack

GZF nice eh?

But this is probably only applicable in campaign mode


[Last Edit: 6/2/2014]
There are some limitations of this bug which was recently found out. 
1) Research skill Armored will disable defense bug
2) Research skill Pierce will disable attack bug
3) Snake spear (Study 9) will disable attack bug
4) Cloak (Study 27) will disable attack bug

Based on the above, I reckoned only the defense bug will work. Likewise mentioned, its only useful in campaign mode

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Rationale for this ?

- GZF had been a pain with its damage at 100% first round. Hence he cripples a lot of players in country battle. 
- To even the odds, Renren came out with the solution to nerf GZF in round 1 making him attack lesser in round 1. 
- This however made GZF very useless as 2nd round, his damage decreases significantly. Hence to even odds, GZF defense also improved for the first round
- Viola, we have a buggy GZF :D