They were indeed in a hurry, but they knew they couldn't be rash.
Fortunately, Ji Tianqi's closed-door cultivation was quite flexible. After every time he crafted cold weapons, he needed to go to the Otherworld to recover his Power or rest. During this time, it was just right to take certain items from the real world to the Otherworld to complete the 'Void State' transformation.
He didn't even need the Fire Qilin to help with the transfer anymore, because Ji Tianqi was watching the entire process of bringing the items over, so there was no need to temporarily store them in the Otherworld — many of the items were of no use to him, so there was no need to keep them in his Otherworld armory for easy access.
He would just take the items over, meditate to recover his condition, and then return.
The Science Academy's understanding was still different from Ji Tianqi's.
