1. The baked biscuits will be a little hard when they are made. This is probably because the butter was not whipped until it was light yellow and puffy during the making process. Secondly, it may be that low-gluten flour is not used, or the temperature of the oven is set incorrectly during the baking process.

2. The problem with scones may be because we did not beat the butter to the appropriate level during the making process. Usually when making biscuits, we need to whip the butter until it is light yellow and the whole butter needs to be fluffy.

3. In addition, it may be because the flour used is wrong. We should use low-gluten flour when making biscuits, and the flour needs to be sifted when adding flour. Secondly, the temperature of the oven is wrong when baking biscuits, which will also cause the baked biscuits to be very hard.