What type of details about langdarma can be gathered from the following bio? Bio: langdarma -lrb- '' mature bull '' or '' dharma bull '' , proper name u dumtsen -rrb- was the tibetan emperor , who most likely reigned from 838 to 841 ce . early sources call him tri darma '' king dharma '' . his domain extended beyond tibet to include dunhuang and neighboring chinese regions .
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- issue - title - native lang name - birth name - reign - mother - death date - predecessor - father - birth date - native lang - name