fix

app/service/course/institution.js

@@ -427,7 +427,7 @@ class InstitutionService extends Service {
             if (institution.class_type) {
                 tags.push(institution.class_type);
             }
-            if (build_time) {
+            if (Number(institution.establishment_time)) {
                 tags.push('成立' + build_time + '年');
             }
             const image = institution_images[i] ? institution_images[i].image_url : '';