Killing Grandmasters indeed allowed one to quickly acquire Heaven and Earth Spirit Essence and rapidly restore their Essence.
However, simply killing Grandmasters to extract Heaven and Earth Spirit Essence was certain to incur the jealousy of all Grandmasters in the world, and might even provoke a united attack from the world's experts.
After all, no one wanted to one day become fodder in someone else's pot, or to unwittingly dress another in bridal robes.
"Killing a few Grandmasters is likely very difficult," said An Jing with a shake of his head, "Perhaps we should try a different method. Let's storm into the Zhenyi Sect."
An Jing looked at Luo Chongyang, "Old Taoist, could it be that you desire the bait from the Zhenyi Sect? Are you deliberately deceiving me into this trap?"