The letter of guarantee is the letter of commitment, which has the legal effect of contractual nature. As long as the expression of the true intention of the opposite party is not imposed or coerced, and does not violate the legal provisions, it is a valid contract or letter of commitment, which can at least play the role of proof. If the other party makes another mistake, it will be in a disadvantageous position in terms of property division and child rearing, and will suffer losses even if it does not make a commitment in the legal principle. The commitment, that is, the fact, the content of the commitment is consistent with the legal provisions, can be fully recognized as an effective act, and the parties and the opposite party should fulfill the commitment, which is supported in the legal principle. However, if this kind of guarantee is not notarized, the commitment party may make a wrong move, saying that it is not his true intention, but made under duress. In this case, it is necessary to rely on the legal procedure to presume and determine.
