It's about time those pesky, trouble making JQ 788's were stood down,given a thorough going over,provided a new red and white uniform and told to front up to mainline.Then they might start to behave.
Looking at air fleets, the oldest aircraft is 10 years old, the youngest 8 years old. So the whole fleet essentially is now ready for its "D" check.
I assume they don't conduct such heavy maintenance locally.