Richard looked at the table, originally over a meter long, now forcefully folded into less than a meter, causing severe distortion and deformation, and was certain that the "crack" sound he had just heard was not an illusion. He had applied too much force and directly damaged the table.
From this perspective, his previous action was somewhat akin to forcefully stuffing the table into a sturdy, small stone cave, where the table naturally got crushed. This side explanation showed that the inner space of the Iron Ring was very robust, and there was no need to worry about it easily bursting.
In that case, anything exceeding one cubic meter in size could theoretically be stuffed into the Iron Ring, as long as one had the ability to compress it into a volume of one cubic meter.
Taking a gentle breath, Richard started the third round of tests.