South Gate, ancient, mysterious, architecture, cultural heritage, historical heritage, spiritual symbol, human pursuit, progress, growth, unremitting efforts, sky, God, reverence, respect, isolated into the sea, the southernmost tip of Putuo Mountain, separated by a river, stone bridge, ring dragon bridge, unique architectural style, tall gatehouse, huge door leaf, pursuit of excellence, self-transcendence, solemn and sacred atmosphere, relationship between human and nature, history, culture, meaning and value of life, cultural connotation, natural landscape, breathtaking scenery, precious heritage.