(250719) — VLADIVOSTOK, July 19, 2025 (Xinhua) — A Chinese girl participates in an abacus competition in Vladivostok, Russia, July 19, 2025. The “Pacific Cup 2025” International Mental Arithmetic Olympiad was held Saturday in Russia’s Far…
(250719) — VLADIVOSTOK, July 19, 2025 (Xinhua) — A Chinese girl participates in an abacus competition in Vladivostok, Russia, July 19, 2025. The “Pacific Cup 2025” International Mental Arithmetic Olympiad was held Saturday in Russia’s Far…