Colorado Resident needing to renew Chinese Passport

Hi, first, make an online appointment for the application.
Prepare your passport and its copy, a completed application form, and 4 passport-style photos, Chinese ID card, residence permit in the US, an introduction letter as well as other documents the consular officers consider necessary, and then submit the application to the consulate where you resides. They would come to Denver once a year, and you can contact them to confirm this.