Because the time value of the same real estate is different, the valuation is usually only an estimate of the value of the evaluation object at a specific time. This time is called the valuation time point. According to this text, what must be wrong in the following statements? ['According to different valuation purposes, the valuation point can be in the past.', 'The valuation time is the specific time when the valuation operation starts in advance.', 'Real estate projects to be demolished will receive different compensation due to different time points of valuation.', 'When predicting the price of a real estate project after completion, the valuation point is in the future.']