This pairing isn't particularly strange; the reasoning has already been given: to prevent the other side from stealthily attacking and disrupting their own Array Master's focus.
The Zhao Family House Protection Array is so familiar to Li Zhiyuan that he'd recognize it even if it were turned to ashes.
What he needs to do now is find the node that Zhao Yi modified.
As long as he finds this node, deduces it, and substitutes the deduction result back into the original Array, he can partially master this Array and ensure free entry and exit.
It sounds simple, but the amount of deduction required is astounding, as Zhao Yi hadn't communicated with the young man in advance, and Li Zhiyuan doesn't know where Zhao Yi's modified node is located.
However, just as Li Zhiyuan was about to conduct extensive deductions, he stopped again.
The boy looked at the two door knockers on the gate.
These are the two Array Eyes at the front of the gate, corresponding to the latch at the back.
