How long does it take to soak king kong in salt water?

About a week.

Soak the cleaned Vajrayana Bodhi in salt water for about a week, and it will turn red, so take it out in about a week.

Rudraksha is the fruit of a large evergreen broad-leaved tree (Du Ying). The leaves of King Kong Bodhi are green, the trunk is cylindrical and the bark is white.