The reason why Longxue 2 can't be used immediately is that it needs to carry out various performance tests to ensure that it can run normally in Antarctica in the future and meet the work requirements. Before the official expedition to the South Pole, Longxue 2 needs to carry out performance tests for several months, including anchoring, power, steering, braking, turning and other indicators, and consider the comprehensive strength of Longxue 2 from multiple dimensions. The data requirements of these tests are extremely strict, which is a real "extreme challenge". During the test, the crew and expedition members will bind and fix all the scientific research equipment and materials on the "Snow Dragon 2", and engineers will also carry out detailed and strict maintenance of the whole ship machinery around the clock to ensure the safety of personnel. After these tasks are completed, Longxue 2 can be officially put into use.