When shopping in China, one should test or at least see the real product before making the purchase. A friend of mine bought an mp3 player in Shenzhen, only later found out that what he paid for was nothing more than the plastic outer shell.
There are many tourist traps. And Yik and I were stupid enough to fall into one of them during our Sanya trip two weeks ago.
Because we wanted to eat more fruits in our 4-day vacation, our taxi driver drove us to a fruit stall. Only a few kinds of fruit were selling there, and beside mangos, all of them were wrapped in colored plastic paper. The salesgirl in the fruit stall told us that the fruits wrapped were different kinds of Hainan’s tropical fruits, with exotic names like 霸王果 (literally translated as “conqueror fruit”) and 吉祥果 (literally translated as “fortunate fruit”), definitely some must-try, Hainan specialties, blab blab blab…
After some bargaining, we bought a so-called conqueror fruit and a so-called fortunate fruit. We unwrapped the fruits when we got back to our hotel, and we found nothing but a grapefruit and a white melon. While the grapefruit was inedibly dry that we had to throw it away, the melon was awfully sweet! So that’s not a total lost at least. Haha.
After the trip, I researched online and learnt that a conqueror fruit should be a fruit that looks like a small mango, while fortunate fruit may be another way people call a pitaya, aka dragon fruit (火龍果).
Well, so we got cheated and we have learned our lesson. Thanks god that the tuition for this lesson is very much affordable HAHA 
We got told that this fruit is called a 霸王果 (conqueror fruit). It’s really nothing but a melon. We were so naive… 
This is how a 霸王果 (conqueror fruit) should look like, size of a little mango.
And we were told that the fruit wrapped inside is a 吉祥果 (fortunate fruit). It was really nothing more than a grapefruit… or an orange…
According to some Chinese forum, 吉祥果 (fortunate fruit) is just another name of 火龍果 (dragon fruit).
When a hawker tries to make some tourist dollars, well…..
this is what happens as you have found out.
The pictures you took clearly revealed the identities of the fruits :
‘Fortunate fruit’ is actually ‘ Pitaya ‘, the fruit of a Cactus plant originated in Mexico, Central and South America.
It could have been introduced to Hainan as the Cactus is widely planted in Vietnam, Taiwan and Malaysia.
‘ Conquerer fruit ‘ is actually Honeydew, the smooth skin variety of muskmelon.
It has Creamy outer skin with greenish/ yellowish flesh.
You can get more information from the internet if you Google for pitaya and honeydew.
ya, that’s a part of the traveling package we get as a tourist. luckily this particular lesson not an expensive one
we get smarter along the way, n hopefully minimize our ‘tuition cost’ 
Actually, when I travel, I like to eat something local, buy a bit of everything, even though I know, along the way , I might lose a few dollars here and there. And sure enough the so-called collectibles are collecting dust in the store room, sometimes for years.
However, it sort of enrich your memories of places you visit, contributing something like talking points in a gathering where friends who came back from ‘ god forsaken places ‘ started recounting their experiences.
It makes the gathering more enjoyable and everybody will have a good laugh.
On that basis, do try something new, wherever you go. It makes your trips more memorable.
same here. i like to try the local food when i m traveling. its an excellent way to learn more about the culture of that place, enrich our travel experience… but i have stopped buying those touristy souvenirs (unless its edible
). dont wanna collect too much junk in my room. i probably wont even take a look at many of them but only on the day i clean my room n decide to dump them 
instead i take lots of photos with my digital camera, some videos too
very good way to keep my travel memories, also save space n very environmental friendly. haha