It looks like the fruit of oranges and vines, with the milk peeled off and a little pink flesh ... Does anyone know what kind of fruit this is?

Apocynaceae 9 1 mountain orange. Ma's tangerine vine, alias: Dongrongzi, Qutou Chicken, Shan Ge, Mangosteen, Monkey Fruit, Gong Hammer, Ma Teng, Mangosteen, Lingna. It is the fruit of mountain orange of Apocynaceae. Ecological environment: Born in hills, valleys, climbing trees or stone walls. Distribution of resources: Guangdong, Hainan, Guangxi and other places. Indications: activating qi; Elimination; Insecticide. Main stomach gas pain; Full diaphragm and chest; Infant malnutrition; Hernia scrotum; Skin heat toxicity; Wet tinea scabies