If Zhi's men beat the J-League outfit they will qualify for the knockout round of the continental competition for the fourth consecutive season.
In their previous meeting on March 18, Guangzhou had to dig deep to beat Kashima 4-3 and Zheng is wary of the fact that Kashima will do everything in their power to ensure they don't lose their fourth successive AFC Champions League match.
"I think we will have some unexpected events in tomorrow's match, since we must play in a very different environment as the visiting team," Zheng told the South China Morning Post.
"Putting our full effort into winning the game is very important. A few new players have joined the team, and we are trying out various options. I can't say that those options are functioning very well at the moment, but I can see that they are starting to work better."
However, Kashima have been given a glimmer of hope ahead of their match after Guangzhou were handed their first loss of the Chinese Super League season when they were beaten 2-1 by Henan Jianye on Friday.