LUNHUI ROD LV3 how do i get this item , from whom should i get it from?

So
1. in chapter 3 you need to kill boss dont know names its a snake in Shan Wa Dai location (or something like that). Loot from boss Rod.
2. Go to Bat Cave and kill bats. Take item Summon boss and use it
3. After using item you are moved to dark room when you can find 2 bosses (there are more bosses there) you need to kill the biggest one its big green boss. Drop Kepsake of god poison from this boss.
4. Go with Rod and God Poison to Tin Yun Tempale and find NPC in right down corner of this location (NPC have your rod as ability).
5. You have got rod lvl1 so you go to Practice Yard and kill creeps. Its stacking when you kill it.
6. Now you can see that you can upgrade it with FEXIAN. So combine it and you got it.
IMPORTANT!!!!!! THINGS!!!!
REMEMBER dont combine your rod from SNAKE boss with FEXIAN because you cant exhcange it with NPC in tempale.