Can cf 20% Experience Card and 50 Experience Card be superimposed? If not, how to calculate?

It's superimposed If it is a dual card of the same order of magnitude, it cannot be superimposed, and it can only increase the use time. If 7-day 20% experience card and 7-day 50% experience card are superimposed, the added value of experience is 70% and the effective time is 7 days; A 7-day 20% card and a 7-day 20% experience card are superimposed to form a 14-day 20% experience card.

Hope to adopt, thank you!