三大公司的收购行动只是其海外布局的一个开始，后期还将进一步演绎相关资产的收购。那么，为何原本对海外油田长期沉默的中国巨人会在今年集体猛醒，不遗余力地展开收购行动？扩张后的三大公司在国内的布局又会出现怎样的变化？ The takeover actions of the three companies are just the beginning of their overseas distribution and will be further explained later in the acquisition of the underlying assets. So why did the Chinese giants, who had long been silent on overseas oilfields, woke up collectively this year and spared no efforts in carrying out the acquisition? After the expansion of the three major domestic companies in the layout of what changes will occur?