This study plans to enroll 150 patients who are candidates for "intervention without implantation" therapy and they will be randomly assigned in a 1:1 ratio to either the new-generation Firesorb scaffold group (BRS group, N=75) or the drug-coated balloon group (DCB group, N=75). All enrolled patients will undergo angiographic follow-up at 1 year post-procedure, and serial follow-up (via telephone or outpatient visit) will be performed at 1 month, 6 months, 1 year, 2 years, 3 years, 4 years, and 5 years post-procedure. The primary study endpoint was percentage diameter stenosis at 1 year post-procedure.