VEGFA and neoplasm: Similar to the excellent in vitro performance of WP@R‐EM in engineering tumor cells, WP@R‐EM carrying two therapeutic cargoes, DIR for photothermal therapy and VEGF‐downregulating siRNA, showed exceptional inhibition on both primary tumor and tumor metastasis, as the spontaneously generated exosomes in tumor tissue could promote deep penetration of two therapeutic drugs.