It is surrounded by a stone railing, with carved figures.

In the centre of this tope was found a small chamber, made of six stones, containing the relic-box of white sandstone, about ten inches square.

Inside this were four caskets of steatite (a sacred stone among the Buddhists), each containing small portions of burnt human bone.
On the outside lid of one of these boxes was this inscription: "Relics of the emancipated Kasyapa Gotra, missionary to the whole Hemawanta." And on the inside of the lid was carved: "Relics of the emancipated Madhyama." These relics, with those of eight other leading men of the Buddhist Church, had rested in this monument since the age of Asoka, and cannot have been placed there later than B.C.

220.
The missionary spirit displayed by Buddhism distinguishes it from all other religions which preceded Christianity.

The religion of Confucius never attempted to make converts outside of China.