Guilan is the watchman of the endless border. His mission is not to guard a city, but to chase the "echoes" that escape in the rifts of time and space - lost memory fragments, each of which may cause disaster. Guilan's running never stops, his steps are like wind, and his thoughts are like electricity. He shuttled rapidly between the broken world, with the collapsing reality behind him and the unknown pursuit ahead. Gui Lan longs to find her own echo, but must struggle to choose between saving all sentient beings and self-salvation. Every time he ran, he was racing against his own shadow, trying to surpass the past that could not be overtaken. The story advances at a tempestuous pace, with time and space folded and intertwined. Guilan's guards not only fight against the outside world, but also against the inner loss and longing. Endless guarding is not only about protecting the world, but also the pursuit of self-meaning. In this endless run, can Gui Lan catch up with his destiny and hold on to his last hope?
