According to China ’s inheritance law, the legal succession in the first order is: spouse, child, parent, and the legal successors in the second order are: siblings, step-parents, and grandparents. After the legal succession begins, the successors in the first order inherit, Heirs in the second order do not inherit. Those who do not inherit in the first order shall be inherited by the heirs in the second order. Several people who have inheritance relationship with each other died in the same event. If the time of death cannot be determined, it is presumed that there is no death before the heirs. Each of the deceased has an heir. If several deceased persons have different identities, the elder is presumed to die first; if the deceased have the same generation, it is presumed that they will die at the same time without inheritance from each other, and their respective heirs will inherit. According to the above definitions and in accordance with the above provisions of legal inheritance, Which of the following are correct:. ["Wang Yi's couple and Wang Yi's parents lost their lives in a flood. There is no way to determine the date of death. Wang Yi has only his younger brother Wang Er, and Wang Yi's wife has only a father. Inherit the entire legacy of Wang Yi.", 'Divorced Liu Da and his son (underage), his brother Liu Er died again in the secondary school, and the time of death cannot be determined.', "Li and his wife and his only daughter (married) went out by car. A car accident occurred on the way. All three died, but the date of death could not be determined. Ms. Li inherited the inheritance of Mr. and Mrs. Li's parents before the parents.", "Ma and his eldest son, Ma, whose grandson (the only child born to him) lost his life. There is no way to determine the date of death. Only Ma has left a million yuan heritage. Among his relatives are only his wife and his second son, Ma Er. Marta's wife and Ma Er inherit different property shares."]