This work was popular in Japan not for its geographical knowledge, but for its analysis of potential defensive military strategy in the face of European imperialism and the Qing's recent defeat in the First Opium War due to European artillery and gunboats.
To je djelo bilo popularno u Japanu ne zbog svog geografskog znanja, već zbog svoje analize potencijalne obrambene vojne strategije u obliku europskog imperijalizma i nedavnog poraza Qinga u Prvom opijumskom ratu zbog europskog topništva i topovnjača.