Lee's visit can be regarded as a tour for deeper political ties.
The Singaporean government has shown great political wisdom and insight in expanding economic cooperation with China, especially in encouraging its businessmen to seek opportunities in China's northeast and northwest regions.
China-Singapore political ties have returned back to normal and Lee's visit is likely to bring the relationship to a new level.
As a mater of fact, Singapore has already taken the lead in expanding cooperation with China in the financial sector.
Among all the FTA negotiations that China has been in, the negotiation with the ASEAN is definitely the fastest and most fruitful one.