(b)within three years after that date, purchased any other land or building or any right in any other land or building or constructed any other building for shifting or re-establishing the said undertaking or setting up another industrial undertaking (new asset), then, instead of the capital gain being charged to income-tax as income of the tax year in which the transfer took place, it shall be dealt with as follows:—(i)if the capital gains exceeds the cost of new asset, such excess shall be charged under section 67, and for computing any capital gains arising from the transfer of the new asset within three years of its purchase or construction, the cost shall be nil; or(ii)if the capital gains is equal to or less than the cost of new asset, no capital gains shall be charged under section 67 and for computing capital gains from the transfer of the new asset within three years of its purchase or construction, the cost shall be reduced by the amount of the capital gains.