Legal analysis: this finance can't be found. As long as the train tickets are purchased normally, they can be reimbursed, and only one mode of transportation invoice can be reimbursed at a time. Taxpayers and withholding agents shall set up account books in accordance with relevant laws, administrative regulations and the provisions of the competent departments of finance and taxation of the State Council, and keep books and accounts according to legal and valid vouchers. If you buy a train ticket, you can find out whether you have taken it. You can know whether you have been on the train by scanning your ID card and train ticket information at the entrance of the railway station.

Legal basis: People's Republic of China (PRC) Social Insurance Law.

Article 6 The State exercises strict supervision over social insurance funds. The State Council and the people's governments of provinces, autonomous regions and municipalities directly under the Central Government shall establish and improve the supervision and management system of social insurance funds to ensure the safe and effective operation of social insurance funds. People's governments at or above the county level shall take measures to encourage and support all sectors of society to participate in the supervision of social insurance funds.

Article 7 The administrative department of social insurance in the State Council is responsible for the management of social insurance throughout the country, and other relevant departments in the State Council are responsible for the relevant social insurance work within their respective functions and duties. The social insurance administrative department of the local people's government at or above the county level shall be responsible for the social insurance management within its administrative area, and other relevant departments of the local people's government at or above the county level shall be responsible for the relevant social insurance work within their respective functions and duties.