A man "lost his appetite for a few days" after he found a dead bat inside his family-sized oyster sauce jar.
Mr Guo, from Jinan, east China's Shandong province, claimed he and his family have been eating the sauce in the past three months and only realised the bat soaked inside when they nearly used up the sauce.
Video taken by Qilu TV channel, Mr Guo shows the 6kg mega family sized oyster sauce he bought from the popular food brand, Haitian.
He says: "My mum was cooking and complained she couldn't get the oyster sauce out.
"I went and took a look and saw this bird-like carcass lying at the bottom of the bucket. But it wasn't until I picked it up to find that it was actually a bat.
"I lost my appetite for a few days."
The dead bat's body and wings are visible to see and is soaked with dark, sticky oyster sauce.
Mr Guo was forced to throw away the meals and brought the oyster sauce to the retailer.
"I think the bat got in during the packaging process," he added.
"There is no way it could fly into our house because we close the lid every time after use.
"We have been eating this for at least three months and only find out until recently."
A spokesperson for Haitian Food told the media that all their products have passed through safety inspections and professional screenings.
He said: "It's not possible that a bat could fly in during the process. If the bat did get in through the fermentation stage, it would decompose.
"We are willing to give another or two bottles of oyster sauce as compensation. But we are not responsible to any financial compensation unless there's proof that the bat fell in during the process of making the sauce."
Mr Guo said he will be looking into a third party food hygiene test to find out.