The four principles of cooperation are:

1．Voluntary participation: All parties involved in the cooperation must willingly agree to participate．No one should be coerced or forced into cooperation.

2．Equality: All parties involved in the cooperation should have an equal say in the decision-making process．No one should be given more power or influence than others.

3．Mutual benefit: The cooperation should result in benefits for all parties involved．No one should be disadvantaged or exploited as a result of the cooperation.

4．Transparency: All parties involved in the cooperation should be open and honest about their intentions, actions, and outcomes．No one should be kept in the dark or misled about the cooperation.