2021 was a crucial year for the U.S. to encounter unprecedented crises. Domestically，the nation was suffering from the once-in-a-country Pandemic，the worst economic recession since the end of the Second World War，a rare supply chain disruptions，and a deep-rooted social crisis. On the global front，the rise of China and global climate change has brought about tremendous challenges. The above six intertwined and multi-layered crises have become the difficult problems the Biden administration must face. To systematically resolve these six crises，the Biden administration uses the strategic competition with China as a trigger to buoy the “Bidenomics” at the domestic level and restore geoeconomic strategy externally. Although more concrete policies of “Bidenomics” and geoeconomic strategy are still under consideration or discussion，judging from the actions that have been taken，the 2021 scorecard of Biden administration was a mixture of good and bad. The main causes lie in the administration’s lack of political capital，overly ambitious goals，unexpected changes in the external environment，conflicting views within the government，and irreconcilable discrepancies with its allies. As the “Bidenomics” and geoeconomic strategy gradually carried out，a complete Sino-U.S. decoupling would not be feasible，but a partial decoupling in certain sectors is likely to be inevitable. In the long term，even under the two parallel systems，China and the U.S. will remain connected to a certain extent and hopefully achieve competitive coexistence.