Just how many of them were there? It seemed to him that they just kept coming at him and Sinai. At some point he just lost count of how many he killed though the amount he had killed had taken its toll on him. To continuously fight and kill these things with no break was putting strain on him and at this point he was just running on fumes. He prayed that Captain Mok's kido clone would return with help before they are killed. Zheng didn't know how much longer he could last but he had to force himself to fight or else death would be his reward. 

Using shunpo to move around the hollows and quickly, and skillfully began to smash their masks with a variety amount of strikes combining his strength, speed, agility, and extremely accurate movements to fight. He was really putting all he had into these strikes in hope that this would put down many hollow's down. With the added kido thrown in every now and again he was really cutting down the number of hollows though it didn't even seem like it to him. It seemed like they were completely endless and their numbers seemed to be even vaster than the last. He got the feeling that he was going to die.