China does not celebrate this day, however Chinese Christians may do so.
Christians all over the world celebrate All Saints Day on November 1, including in India.
Christians are saints. Saints are Christians.
Not all Christians celebrate Easter so No
The Solemnity of All Saints, All Hallows, and Hallowmas are the Roman Catholic Church's names for what most people call All Saints' Day.See the related link listed below for more information:
November 1 is All Saints Day.
Catholics do not celebrate every saint's feast day as elaborately as those such as St.s Patrick, Valentine, Nicholas, etc. merely because there are so many saints. At daily mass their names may be mentioned and we remember them and reflect on their lives. We think about what they did to promote Christ and honor them for their efforts and reflect on how we can imitate them imitating Christ.
All Catholic congregations around the world celebrate All Saints Day as it is a major solemnity and a Holy Day of Obligation.
Roman Catholics and some other Christian denominations, all over the world, celebrate All Saints Day.
They don't, unless they are practicing Christians, in which case they celebrate it like all other Christians.
Globally, all Christians celebrate Christmas.
No.