Legal analysis: if a person dancing in the process of square dancing, because of some physiological reasons fainted or died, then, in the absence of any mandatory this person to dance under the premise of the square dance, in fact, dancing together with the people do not exist responsible for the argument, because it is not with the intention of causing the death of others things.
Legal basis: "Chinese People's *** and National Code" Article 27 The damage is caused by the victim intentionally, the perpetrator is not responsible.