Damon Chua’s Incident at Hidden Temple, the current offering of Pan Asian Repertory Theatre, takes place in 1943 China, a dramatic juncture in East-West political relations and highly promising background for a play. The Nationalist Party and the Chinese Communists, usually incompatible as water and oil, have forged an alliance to resist Japan’s aggression. The two political groups—led, respectively, by Chiang Kai-Shek and Mao Tse-Tung—are restive bedfellows, with scant potential for long-term cooperation.