In the course of a fight, if a knife is wielded, does it mean that the nature of the fight has changed? 
In the course of a fight, if a knife is wielded, the nature of the fight will change, and it may be found to be a criminal offense such as intentional injury or robbery.
According to the Criminal Law of China, the crime of intentional injury refers to the act of intentionally causing bodily harm to another person. If, during a fight, one party is armed with a knife and intentionally injures the other party, then this act may be found to be the crime of intentional injury. According to the provisions of the Criminal Code, the penalty for the crime of intentional injury is heavier, and it may be punishable by imprisonment or life imprisonment, as well as fines and other penalties. 
In addition, if one party is armed with a knife and robs another person's property by violent means during a fight, then this act may be found to be a robbery. The crime of robbery refers to the act of forcibly seizing another person's property by violent means, and according to the provisions of the Criminal Law, the punishment for the crime of robbery is also heavier, and it may be sentenced to fixed-term imprisonment or life imprisonment, and fines and other punishments.
Therefore, in the process of fighting, if you are holding a knife, you should pay enough attention to avoid unnecessary injuries and legal risks. When encountering contradictions and disputes, we should try our best to resolve them in a peaceful and rational way and avoid using violent means. In the unfortunate event of a violent conflict, you should report it to the police and be investigated. 
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