We are just 20 days away from finding out whether China's A shares will be included in the MSCI Emerging Markets Index.  As our reporter Martina Fuchs learns on the sidelines of the Morgan Stanley China Summit, investors are split over whether the time is ripe. 

Benchmark compiler MSCI will decide June 14th whether or not to include Chinese A-shares in its Emerging Markets Index.

An inclusion could draw 400 billion US dollars into Chinese stocks over the next decade. But there are two camps: optimists and skeptics.

It comes as Shanghai and Shenzhen stock exchanges are set to publish new rules aimed at curbing arbitrary trading halts by companies listed in China, so-called A shares, and limiting the trading-halt period. 

Analysts say stock suspensions have been the main obstacle to China’s inclusion in MSCI's indexes. 

China's sell-off last summer and market frenzy earlier this year has added to the woes.

MSCI said in March that a decision to include yuan-denominated shares in its index will partly depend on regulators implementing changes so that widespread halts can't happen again.

MSCI decided last June against including China's so-called "A" shares in the index, a benchmark for some $1.5 trillion of assets, due to investment restrictions.

MSCI has proposed a 5 percent partial inclusion of China A-shares in the MSCI Emerging Markets Index. That approximates 1.1 percent of the weight of China A-shares in the benchmark. 

If China is added to the MSCI index, the change would take effect in June 2017.