Chương 438: Oh, I See

A wholly-new Buckthorn seed came into being in Castle of Black Iron!

This was the best news that Zhang Tie had ever heard in this period.

"What's the difference between the new Buckthorn seed and that of before?" Zhang Tie asked Heller in mind.

"New Buckthorn seed's adaptability to environment is 27% greater than that of the old ones. They have a greater viability. They could live in colder and dryer regions. Actually, the new seed could survive all the regions in Ice and Snow Wilderness whereas old Buckthorn seed could not."