Fourteen is the correct answer, as China shares land borders with fourteen sovereign countries, a figure it ties with Russia for the highest number of land neighbours of any country in the world. These fourteen nations are Afghanistan, Bhutan, India, Kazakhstan, North Korea, Kyrgyzstan, Laos, Mongolia, Myanmar, Nepal, Pakistan, Russia, Tajikistan, and Vietnam, reflecting China's enormous territorial span across East Asia, Central Asia, South Asia, and Southeast Asia, with a combined land border length exceeding 22,000 kilometres, the longest of any country in the world. This vast frontier arises from China being the third or fourth largest country by area (depending on the measurement methodology used for the United States), stretching from the Pacific coast in the east to the Pamir mountains in the west, and from Siberia's edge in the north to the tropical borders near Vietnam and Laos in the south. The distractor '12' is incorrect and often results from candidates forgetting less commonly discussed neighbours such as Tajikistan or Kyrgyzstan, which border China's remote Xinjiang region. The distractor '16' is incorrect and overstates the count, sometimes arising from double-counting disputed territories or confusing total international boundaries with the number of distinct sovereign neighbours. A common exam confusion is mixing up China's fourteen land neighbours with its maritime neighbours across the East China Sea, South China Sea, and Yellow Sea, such as South Korea, Japan, and the Philippines, which do not share land borders with China. The revision takeaway is to remember '14, tied with Russia' as the headline fact, and to recall the four sub-regions China borders — East Asia (Mongolia, North Korea, Russia), Central Asia (Kazakhstan, Kyrgyzstan, Tajikistan), South Asia (Afghanistan, Pakistan, India, Nepal, Bhutan), and Southeast Asia (Myanmar, Laos, Vietnam) — to reconstruct the full list under exam pressure.
