In the end, Sun Jack still didn't buy the parts for AA. It wasn't that he didn't trust her skills; he just didn't have enough money. The Laser Generator she mentioned alone would have cost more than all he owned, and would still not be enough to buy even half of one.
Her ideas were grand, but when it came down to it, they still required money.
Sun Jack could only ask her to start designing, to save the ideas in the system's memory and wait until he had the funds to bring them to life one by one.
But Sun Jack knew that AA was trying to help him. After all, if he had asked King Kong to do it, he'd surely find every possible way to charge him a hefty sum.
Afterwards, to avoid overthinking, Sun Jack went to an abandoned overpass and kept training with his new attack method.
At the same time, he used Tapai's recording feature to replay his previous encounters, starting to review the combats, evaluate the outcomes, analyze the reasons, and summarize patterns.