China's strong relationship with Western countries has been a source of concern for India for several reasons. 

Firstly, the economic relationship between China and Western countries has allowed China to become a major player in the global economy, which has allowed it to gain significant economic and political influence. This, in turn, has made it more difficult for India to compete with China in the global market, as Western countries are more likely to invest in China rather than India.

Secondly, China's military modernisation and expansionist policies in the South China Sea and along its borders with India have increased tensions between the two countries. India is particularly concerned about China's increasing military presence in the region, which has the potential to threaten India's security and territorial integrity.

Thirdly, China's strong relationship with Western countries has also allowed it to gain access to advanced technology and military equipment, which has further enhanced its military capabilities. This has made it more difficult for India to keep pace with China in terms of military power, which is a major source of concern for India given the ongoing territorial disputes between the two countries.

Fourthly, China's strong relationship with Western countries has also allowed it to gain political influence in international forums such as the United Nations and the World Trade Organization, which has made it more difficult for India to pursue its own interests in these forums.

In conclusion, China's strong relationship with Western countries has several negative implications for India, including increased economic competition, heightened military tensions, increased military capabilities, and reduced political influence in international forums. India needs to pursue a more proactive foreign policy in order to counter the negative effects of China's relationship with Western countries and safeguard its own interests.