{COUNT, plural, =1{} other{}}

The string appers to be a valid placeholder in ICU Message Format: {COUNT,plural, =1{已跟踪新包裹}other{已跟踪新包裹}}, which renders the same text “已跟踪新包裹” regardless of the COUNT value. However, ICU Message Format is not a common way to handle plural-variable text in native iOS apps.