There is no doubt that China is flexing its tentacles to satisfy its insatiable ambition of territorial expansion to create hegemony in that part of the part.  In order to achieve that objective, it has to establish its basis around the world which is what is it doing.As far as establishing its naval base in Pakistan is concerned, Pakistan has taken shelter in the lap of China for a long time.  It handed over part of PoK to China, it has allowed it Gwadar port and Balochistan area to be used by China, it has provided special security arrangement to protect China's interest in the CPEC project, Chinese language is being taught in Pakistan, Chinese engineers and other workers are working in Pakistan, China has given loan to Pakistan to develop its energy generation plants and its infrastructure etc.  Unfortunately, Pakistan does not understand China's long range objective.  China has allowed financial assistance at a very higher rate of interest which Pakistan may never be able to pay off, slowly and slowly, China is overtaking portion of territory of Pakistan, China will lose its sovereignty and integrity when full Chinese language will be shoved into the throat of Pakistani students.  needless to say, China is adamant of defending its presence in the South China Sea and feel emboldened in declaring Arunachal Pradesh, part of Indian territory, as part of Southeran part of Tibet which is occupied by China.  I think, China is more dangerous than any other country on the earth.  It is bullying all its small neighbors with all sorts of threats which need to be controlled to maintain peace and tranquility in that region.