For many years, Chang Chiu-yuan sported an eye-catching slicked-back ducktail quiff which became the stand's trademark. People came to call their stall "Ducktail Grass-Jelly Ice" or the "First Bank Grass-Jelly Stand."
張秋源長年留著一頭光滑油亮、整個頭髮往後梳的髮型，相當引人注目，也成了仙草冰的招牌，日後有人遂以「海吉桑仙草冰」稱呼這個仙草攤，也有人稱為「第一銀行仙草攤」。