Is Taijiquan the same as Tai Chi Chuan?
Yes. “Taijiquan” is the modern Hanyu Pinyin Romanized Chinese spelling, and “Tai Chi Chuan” the common English spelling. (The Wade-Giles system actually spells it as T’ai Chi Ch’uan). “Taijiquan” is phonetic, whereas “Tai Chi Chuan” may give rise to different pronunciation. Notice that the Romanized Chinese q is pronounced like the English ch’. The “chi” in “Tai Chi Chuan” is different from the “chi” in “chi kung”. In the phonetic Romanized Chinese, the former is spelt as “ji”, meaning “ultimate”, and the latter as “qi”, meaning “breath” or “energy”.