Song Chao found a ring capable of traversing freely between the world and the end of the world. He discovered that while food was considered more precious than gold in the former, the latter was mostly barren, save for an abundance of the latter. With this knowledge, Song Chao struck gold by trading a single tomato from his fridge for an impressive ten kilograms of the precious metal. In fact, food was so highly coveted that it could even be traded for beautiful women. But beware - the power of food in the final days is not to be underestimated. As long as there is sustenance to be had, it reigns supreme.