Put china grass in a pan with water and bring it to a boil.
Empty one of the jelly packets in this. Cook for 2 minutes while stirring continuously. In another pan repeat this process with the other jelly, then refrigerate both of them.
Heat water in a separate pot and add vermicelli to it. When it becomes tender take it out.
Cut sapodillas, bananas, pineapples, strawberries and jellies into pieces. Put them in a separate bowl.
Take a little milk in a bowl and dissolve custard powder in it.Heat remaining milk in a pot and add sugar to it. Add custard when the sugar gets dissolved, and stir continuously. Keep a big bowl over a bowl of ice. Pour hot custard in the big bowl and stir continually for 10 minutes; don't let the custard set. Add fresh cream to the custard and mix well.
Pour custard in the bowl with fruits, add vermicelli as well.
Place lab-e-sheerin in a serving dish, garnish with jellies and serve chilled.