In Ukraine, there's definitely no worry about the source of arms; the only thing to consider is who to buy them from.
Gao Yang still prefers to buy from Rebrov. Firstly, he has already established an initial relationship with Rebrov and also handed over a large sum of money. Plus, he has somewhat built rapport with the soldiers in the ammo depot, so when in urgent need of ammunition, buying from Rebrov is always the quickest and most convenient.
However, before deciding to continue doing business with Rebrov, Gao Yang has to make sure the man poses no threat to him.
Gao Yang snapped his fingers and loudly said to Number Thirteen, who was sitting quietly in the corner, "Leonard, is there anything unusual about Rebrov?"