Ouyang Mengmeng works as a clerk in a taxi company. This profession actually hides many details that can be explored: she has to interact with dozens of driver masters every day, pay attention to the part models of different models when registering vehicle maintenance orders, calculate fuel consumption and revenue difference in Excel when sorting operational data, and even handle passenger complaints - for example, if a driver is complained about taking a detour, she has to adjust the dash cam track to check, not only to appease passengers but also to understand the hard work of the driver. These daily tasks can reflect her meticulousness, patience and logical ability, and can also lay clues to "traveling through trigger points". For example, when she was sorting out the company's old files, she found a taxi operation register from the Republic of China period. Half of a strange copper button was exposed in the worn area of the cover. This copper button may be the key to the Tang Dynasty.
