Although the players below never installed a God's Wood, it was so famous that they have heard of it so everyone very well understood the installation of the God's Wood.
The first installation of the God's Wood was very simple. Players just needed to use their usual hammering strength to hammer it and it will be a success. Any experienced Blacksmith would be able to complete it.
However, the second installation of God's Wood was the real beginning. The difficulty was raised by more than a level.
As the hammering count increased from once to thrice, the original strength had to be split into three equal hammers. Once there was a mistake, it would be a failure.
Normal people would have to rely on luck to even succeed once at splitting the original strength into three equal portions, much less three times… Unless they devote themselves completely to blacksmithing and practiced thousands of times, they would not be able to do this.