It is impossible to determine the authenticity of Liu Fujin of the Venetian Macao, because it involves many factors such as brand, quality and price.

If you want to confirm the authenticity of a commodity, you can try the following methods:

1. Check the labels and instructions of goods: genuine labels and instructions are usually beautifully printed and detailed, while fake labels and instructions may be rough and incomplete.

2. Check the appearance of goods: the appearance of genuine goods is usually fine in workmanship and good in color and luster, while the appearance of fake goods may have quality problems such as defects or color difference.

3. Check official website: If you buy a product of a famous brand, you can check the authenticity information of the product in official website.

4. Find a professional to identify: If you don't know much about the product or are worried about buying fake goods, you can ask a professional to help you identify it.

In short, if you want to ensure that the goods you buy are genuine, you need to consider many aspects and choose the merchants carefully.