Can I fish in Yanquan, Jinan?

I can't. According to relevant information, there is a huge warning sign in Yanquan, Jinan, which reads "Safety first, cherish life, stay away from danger, start from me." It reminds you to be careful about falling into the water, not boating, not fishing and not swimming. On the stone steps leading to the lake, there are several big signs "Dangerous water depth, no swimming".