Unilateral administrative behavior refers to the behavior of the administrative subject to unilaterally exercise administrative power to achieve administrative purposes. Both parties' administrative behavior refers to the behavior of the administrative subject and the other party being equal and in consensus. According to the above definitions, Which of the following are administrative actions of both parties:. ['The State Council promulgated the "Emergency Regulations on Public Health Emergencies".', 'Tax authorities make fines for tax evasion by taxpayers.', 'Municipal government signs public works contract with a construction company for airport construction.', 'National Tourism Administration issues summer holiday travel guides and tips.']