One way to find out if your antique Chinese object is fake is to do a little research on Ebay. See if the same item is being sold by a Chinese dealer at a low price. If so, it’s a good chance that your object is fake. Also, the PRC passed a law that restricting the importation of any item over 100 years old, so it’s unlikely that any of these items are authentic.
The fake antique market in China is impressive. Some replicas have been so expertly recreated that even professional antique dealers have been fooled.
The only way to ensure you have an authentic antique item is to purchase from a well-established and reputable dealer.