How to Get Return to Jianghu Invitation Code and Blue or Purple Keys FREE - Sword of Shadows

I will just gonna to the point, Here is how to get invitation code :

1. Don't use a nickname that too long. Maximum letter is  just 4 or 5.
2. If it has already been exceeding 5 letter than change the language to Chinese Simplified  and then click confirm then close the game and open it again. And write down your invitation code on paper. Optional : if you want change again to english select last bottom option and choose english then when appear pop up click the left one. 
3. Last thing is if you are already tried those 2 above and still cant see it you must make a new character and make the shorter nickname. 

Invitation code have 5 letter

Then this is how to get green, blue, purple keys :

1. Your might must 50.000 +
2. Your might and your player that used your code must 150.000 +
3. Your might and your 2 player that used your code must 300.000 +

Green colored means green key, blue colored means blue key, and purple colored means purple key

 Thats all.