Hot pot restaurant's product named "Maotai-flavor hot pot" may not constitute infringement, but it depends on some key factors, such as whether the use of brands and trademarks violates relevant laws. Here are some considerations:

1. Trademark right: The unauthorized use of Maotai or other protected trademarks by hot pot restaurants may constitute trademark infringement. Maotai is a famous brand of China Moutai. If the use of the trademark may cause confusion or mislead customers to think that it is a product related to Moutai, then Maotai Company can claim infringement.

2. Market confusion: If the name, packaging or publicity of the product may lead people to confuse that the hot pot is related to the products of Maotai or Maotai Company, it may also constitute infringement.

3. Misleading consumers: If the promotion of the product may make consumers mistakenly think that this is a hot pot related to Moutai, but it is not, then this may also lead to infringement disputes.

4. Fair competition: The law usually allows competitors to use other people's trademarks on the premise of fair competition, but this must not cause confusion or misleading, and does not infringe the rights and interests of trademark owners.

Whether it constitutes infringement in the end needs to be determined according to specific laws and cases. If Moutai believes that the behavior of hot pot restaurant constitutes infringement, it can take legal action to safeguard its trademark right and brand reputation. If faced with a similar situation, it is recommended to consult a professional lawyer for legal advice.