Question: how tall is xu yan?
Answer: With a combined height of 13 ft 10.72 in (423.47 cm), Sun Mingming, 33, and his wife Xu Yan, 29, of China, claim the title for Tallest married couple, measuring 7 ft 8.98 in (236.17 cm) and 6 ft 1.74 in (187.3 com) respectively.