A week wasn't very difficult to pass because Chen Ming didn't really get much time to hide other than those eight hours. After that, he would be busy running for his life and hiding from those four fuckers throughout the day.
They were still chasing him, but thanks to money he got, he upgraded the invisibility cloak so that he could stay twenty hours within his invisibility aspect. But he couldn't really do anything about those remaining four hours where he's forced to stay outside of his hiding place.
And he couldn't even upgrade it more than that because that was the highest limit. Even if he wanted to, he just couldn't. Thus, he would use other options to hide himself.
For instance, recently he purchased a hide and seek capsule. It was basically use and throw pill that can be eaten and be used for a few hours a day. When he would use that pill, he would be able to hide from the public eye even when he was visible and sensed by dogs every now and then.