REAL PROPERTY GAINS TAX – SALE OF SHARES OF COMPANY THAT OWNS LAND

Am I liable to pay real property gain tax (RPGT) for selling shares of a company which owns land. Why am I liable when I am not selling the land?
MEMORANDUM OF TRANSFER – EXEMPTION – STAMP DUTY – RPGT – PERFECTION OF TRANSFER – REGISTRATION OF CHARGE

Advantages of buying/selling houses in 2021