Introduction to Sophora xiang Bridge: "Sophora xiang" is also known as "Nostalgia" and "Huaixiang". The big Sophora japonica tree is a witness to the history of immigration, and it is also the hometown in the minds of immigrants. The vicissitudes of life have changed but the old Sophora japonica has passed away. Of course, the lingering scent of Sophora japonica lingers in the Central Plains and China, lingers in the new home of the hometown, and lingers in the hearts and lungs of millions of descendants of immigrants. This is the feeling of homesickness, the love for the ancestors, and the inseparability of the same roots. Affection.