Cause of death of Shangrao horse

There are different opinions on the cause of death of Shangrao horse.

1. One theory is that Ma Chengzu died of myocardial infarction.

2. Another way of saying it is that the horse accidentally fell to death when he went out for a walk alone.

3. It is also reported that Ma collided with a truck while driving from north to south along Dayong Line to Antian Village, Nanma Town, Dongyang, Dayong Line, resulting in his death on the spot.

Since the official did not disclose the specific reasons for Ma's death, none of the above statements have been confirmed.