Randomized MicroPort's Firehawk DES Versus Xience V: TARGET I Trial

Inclusion Criteria: * Age 18-75, male or women who are not pregnant * Evidence of non-symptomatic ischemia, stable or non-stable angina or past heart attack cases * Target lesion is primary, single artery and single lesion of coronary artery * Target lesion vessel length ≤24mm, diameter 2.25mm-4.0mm * Lesion diameter stenosis ≥70% * Candidates understand the study, willing to sign Consent of Agreement and to willing to accept follow-up For long lesion group, at least one target lesion length ≥28mm，diameter 2.5mm-4.0mm, and one lesion needs to implant 33mm 0r 38mm long stent Exclusion Criteria: * Acute heart attack within one week * Chronic complete stenosis (TIMI 0), left main lesion, three branches need to treat, branch vessel diameter ≤2.5mm and bypass lesion * Calcified lesion failed in pre-dilation and twisted lesion * In-stent restenosis * Stent implanted within one year * Severe heart failure (NYHA above III) or left ventricle EF \<40% * Renal function damage, blood creatinine \>2.0mg/dl * Bleeding risk; allergic to drugs and agents used in procedure/treatment * Life expectation \< 12 months * No compliances to the protocol * Heart implantation cases Pre-specified OCT inclusion/exclusion criteria: * Patients underwent 9-month angio F/U * No binary restenosis at 9-month * LLL between -0.01\~0.2mm * No mix-implanted stent * No more than one bail-out stent * No TLR occurred at 3 years after PCI * The target vessel able to deliver the OCT catheter