Of course, with just over two hundred Crimson Iron Worker Ants, the sample size wasn't rigorous enough. After Zhang Yanhang had killed a few hundred more, it was entirely possible that the Treasure box drop rate could increase, so that an encounter with only seven or eight monsters might yield a Treasure box.
However, there could also be a decrease, such as needing to kill about ten monsters to obtain a Treasure box.
Both scenarios were possible, though the likelihood was quite small. Normally, the sample of over two hundred cases was quite representative of the subsequent drop rate of the Treasure boxes.
Zhang Yanhang glanced at his surroundings. He had consecutively killed about three hundred Crimson Iron Worker Ants here, and now the entire passage was littered with broken exoskeletons and fresh flesh and tissue. The thick crimson bodily fluids were continuously flowing towards the distance due to the force of gravity.