Haizibang is an author about whom limited public information is available. The library currently holds only one work by this author: the two-volume suspense and mystery novel Mask (Jiamian). Based on this information, the author's writing centers on suspense and mystery, and the image of the "mask" tends to point to themes such as disguised identity, hidden truth, and the many sides of human nature. The work is divided into two volumes, suggesting a substantial narrative scope and relatively complex plotlines, which may appeal to readers who enjoy a layered, puzzle-solving reading experience. Because the author's real name, nationality, dates of birth and death, and writing background have not been made public, no further account of the author's life or creative development can be given. This introduction is based solely on the work information in the library and its common classification, with a focus on the author's thematic orientation and the character of the work.