I was thinking about this... Its complex example, but I think we can follow to an good explanation with the rules that we know.
So we have the item or goods on Asset as Zi line.
That Zi line is moving to Chou, they make combination, now the people at the company(Chou Sibling line), are holding the package at Zi Asset line.
We need that hold to brake.
And it would brake at either Wei hour(Wei clashes Chou - they let it go), or if we use True Solar Time then at the same Wu hour(Wu clashes Zi, the combination is broken).