A system for providing a simulated environment for a plurality of users, comprising: a first wearable device, configured to output a first scenario of the simulated environment and a virtual object is displayed in the first scenario, wherein the simulated environment is built with virtual objects, and each virtual object comprising a plurality of portions, and each virtual object comprising a plurality of surface coordinates in the simulated environment; and wherein the first scenario is a view of the simulated environment output by the first wearable device, wherein the first scenario being updated according to the view of the simulated environment being changed in response to the movement of a user of the first wearable device; wherein the first wearable device is further configured to track a first direction of a first object and provide a first indicator in the first scenario of the simulated environment according to the first direction; wherein the first object being an eyeball or a limb of the user, and the first direction is a direction extended from a center of the eyeball to a pupil of the eyeball, wherein the first direction is perpendicular to the surface of the pupil, or the first direction is a direction pointed by the limb; characterised in that a computing unit, configured to determine which portion of the plurality of portions of the virtual objects is pointed at by the first indicator; wherein the computing unit is further configured to determine which of the plurality of surface coordinates of the virtual object is pointed at by the first indicator in order to determine which portion of the plurality of portions of the virtual objects is being pointed; the computing unit is configured to store a first information corresponding to the portion of the plurality of portions of the virtual objects being pointed by the first indicator; wherein the stored first information comprises a frequency count regarding which portion of the plurality of portions of the virtual object is pointed by the first indicator; and the computing unit is configured to perform an operation on the portion of the plurality of portions of the virtual objects which is pointed according to the first information; wherein the operation comprises highlighting the portion of the plurality of portions of the virtual objects, concealing the portion of the plurality of portions of the virtual objects, reshaping the portion of the plurality of portions of the virtual objects or sending a notification regarding the portion of the plurality of portions of the virtual objects. a first wearable device, configured to output a first scenario of the simulated environment and a virtual object is displayed in the first scenario, wherein the simulated environment is built with virtual objects, and each virtual object comprising a plurality of portions, and each virtual object comprising a plurality of surface coordinates in the simulated environment; and wherein the first scenario is a view of the simulated environment output by the first wearable device, wherein the first scenario being updated according to the view of the simulated environment being changed in response to the movement of a user of the first wearable device; wherein the simulated environment is built with virtual objects, and each virtual object comprising a plurality of portions, and each virtual object comprising a plurality of surface coordinates in the simulated environment; and wherein the first scenario is a view of the simulated environment output by the first wearable device, wherein the first scenario being updated according to the view of the simulated environment being changed in response to the movement of a user of the first wearable device; wherein the first wearable device is further configured to track a first direction of a first object and provide a first indicator in the first scenario of the simulated environment according to the first direction; wherein the first object being an eyeball or a limb of the user, and the first direction is a direction extended from a center of the eyeball to a pupil of the eyeball, wherein the first direction is perpendicular to the surface of the pupil, or the first direction is a direction pointed by the limb; characterised in that a computing unit, configured to determine which portion of the plurality of portions of the virtual objects is pointed at by the first indicator; wherein the computing unit is further configured to determine which of the plurality of surface coordinates of the virtual object is pointed at by the first indicator in order to determine which portion of the plurality of portions of the virtual objects is being pointed; the computing unit is configured to store a first information corresponding to the portion of the plurality of portions of the virtual objects being pointed by the first indicator; wherein the stored first information comprises a frequency count regarding which portion of the plurality of portions of the virtual object is pointed by the first indicator; and the computing unit is configured to perform an operation on the portion of the plurality of portions of the virtual objects which is pointed according to the first information; wherein the operation comprises highlighting the portion of the plurality of portions of the virtual objects, concealing the portion of the plurality of portions of the virtual objects, reshaping the portion of the plurality of portions of the virtual objects or sending a notification regarding the portion of the plurality of portions of the virtual objects.