Elder Wu toyed with the wooden box.
The Storm Pear Flower Needles are not uncommon in the Assassin Sect; some well-established Yama-level assassins use them as hidden weapons.
Many of these Storm Pear Flower Needles are crafted by Refinement Grandmasters of the Heavenly Fire Holy Land.
This is considered a classic magical treasure in the world of assassins, a must-have for killing and robbing, or even just traveling at home.
"This wooden box is already a Fourth Grade Taoist Instrument. To continue improving it would be quite costly. Besides, which direction do you want to improve it? Different formations inside will yield different effects."
Elder Wu thought of how Lu Changsheng could even produce top-grade materials for repairing the Mountain and Rivers Chart, so the cost of enhancing the Storm Pear Flower Needles was surely within Lu Changsheng's reach.
