Can preserved egg and cola be consumed together?
Generally speaking, preserved eggs (pi dan) and cola can be consumed together, but it is important to control the intake. The detailed analysis is as follows:

Preserved eggs are rich in protein, fat, minerals, and vitamins, while cola is a carbonated beverage primarily containing sugar, caffeine, and carbonic acid. There is no direct nutritional conflict between the two, and moderate consumption will not cause adverse reactions in the body. Therefore, from a nutritional perspective, preserved eggs and cola can be consumed together.
However, cola contains a large amount of carbon dioxide gas, which can cause gas expansion after entering the gastrointestinal tract. The protein and fat in preserved eggs require a certain amount of time to be digested and broken down. If consumed in excessive amounts, the gas produced by cola may interfere with normal digestion, increase the digestive burden, and lead to discomfort such as abdominal pain, bloating, and diarrhea. Therefore, it is recommended to consume preserved eggs and cola in moderation in daily diet.
In daily eating habits, it is advisable to maintain a balanced diet, control portion sizes, and avoid excessive consumption of any single food item, which helps maintain good health.