**I would suggest Having status bars for certain stuff ( yang form / y -stone )
-Yang formation = Status = Invulnerable
Status after 16m = Vulnerable
-Yaoguai Stone-Status = Vulnerable
Status after 30m = Invulnerable
This would make a point for defending.
Should be "Vulnerable" every 3 hours, HSB battle lasting for 1 hr , 30 mins.
**HS/Heaven's sheild- Would be great with 5-30 secs cooldown to prevent HS spamming
Outpost Ruins/Outpost Wars
How about every 6 or 7 hours?