The relic can smash a hole with a hammer, and even use a hydraulic press to test it (I feel disrespectful). Is this story credible?

Not credible. How hard does it take to hit something with a hammer to get it out of the hole? If he is willing to use such great strength to smash the relics, whether it is true or not, this person is by no means a guru or an ordinary person. It is not good for an old Lama to instigate others.

Moreover, pregnant eggs are not living things. If this little life can crush the relic, wouldn't the relic be instantly turned into powder in people's hands? The contradiction is ridiculous.

Relics, maybe a great man will have an inheritance. But relics are rare in the world. Nowadays, many temples in the world claim to worship relics, which adds up to more than when Buddha was still in the flesh. It is very ironic.

Finally, using one story as evidence of another story is a means of pyramid selling. Some monks are obsessed with money, and it is not the right way to win over mortals in this way.