Bring water to boil
Add sago into the water, bring to boil in medium heat for 5 mins, cover with lid and set aside for 10 mins
Drain out the sago, the sago should now become larger in size and translucent
Add sugar and water, stir until sugar disolves
Add in coconut milk, bring to simmer, remove from heat and then chill until it completely cools down
Blend mango into juice, leave some mango cubes
Put the mango juice into a large glass bowl, mix in the coconut milk, slowly add and mix the evaporated milk in
Add sago into the mixture
Put mango cubes and lychees at the bottom serving bowl, pour the mango mixture in
Put more mango cubes and lychees at the top before you serve