2 Questions about Gates

1. I've noticed a gate accessible in Kaineng Center by going into a tunnel behind the Xunlai Agents. It seems to have a glowing chest behind it. What's the reason for this apparantly unopenable gate?
2. Similarly, why are there gates and warps in the Luxon and Kurzick sides if the only known way to access Unwaking Waters is through the Harvest Temple? Why can your quest markers point to them if they're one-way?

1. A Guild Wars mystery ATM.

2. You can get to the Luxon Unwaking Waters outpost via the quest "To the Whirlpool". I assume there is a similar quest on the Kurzick side. So, it's not merely from the Harvest Temple.

i always thought that chest behind the xunlai agent was the chest that you get after you beat shiro in the end of game area. Maybe i am wrong, just what i thought.