A type of small, red apple with a long stem, resembling a cherry, has been introduced in the Vietnamese market under the names 'American cherry apple' or 'Korean cherry apple', priced at 120-150 thousand VND/kg. Despite its beautiful appearance and promises of crispiness and sweetness, many consumers have found these apples to be sour and astringent, disappointing them. These apples, also known as 'chicken heart' in China, are sold at much lower prices there due to their lackluster taste compared to regular apples. To avoid buying low-quality, poorly ripe apples, it is recommended to purchase from a reliable source with a quality commitment and careful packaging.