The supervisor signs first. The review sequence of project progress payments shall be based on the terms agreed upon by the construction administrative department at the location of the project or by both parties to the construction project contract. The project site professional supervision engineer and the chief supervisory engineer shall first review and sign, and then the contract parties shall proceed according to the proportion agreed upon in the contract. Review and sign, and finally submit to the construction unit for payment of project progress payments. Therefore, the order of review of project progress payment is that the supervisor signs first, and then the follow-up personnel review and sign.