With the yuan closely tracking moves in the dollar index, investors await U.S. consumer price data on Thursday for more clues as to the direction of Federal Reserve policy.

"The yuan will likely remain rangebound in the near term. The effect of dollar buying for dividend payments may not be as clear as expected," said a trader at a foreign bank, adding that he was also monitoring developments in U.S.-China relations.

U.S. President Joe Biden's order last week banning U.S. investment in certain Chinese companies is broader than a similar one signed by his predecessor Donald Trump and has a lower bar, making it easier to add more companies later.

Before the market open, the People's Bank of China (PBOC) set the yuan's daily midpoint at 6.3909 per dollar, firmer than the previous fix of 6.3963.

Spot yuan opened at 6.3907 per dollar and trimmed its advance to change hands at 6.3919 at midday, 45 pips stronger than Monday's late session close.

While the yuan stayed on the stronger side of the psychologically important 6.4 per dollar level, analysts said expectations for strong appreciation had eased after a raft of official warnings against one-way bets on the currency. The PBOC also raised the reserve requirement ratio on foreign exchange deposits for the first time in 14 years last week.

The offshore yuan was slightly weaker, trading at 6.3894 per dollar from a close of 6.3851 on Monday, as the global dollar index rose to 90.069 from the previous close of 89.988.

"The central bank's actions were proven to be effective to suppress one-way RMB appreciation bias," said Ken Cheung, chief Asian FX strategist at Mizuho Bank in Hong Kong.

"The softer China exports figure justified (the) PBOC's concern over the negative impact of broad RMB strength on China exports. The release of China CPI and PPI figures...will show the effect of RMB appreciation on curbing the imported inflation."

Surging demand for raw materials lifted growth in China's imports to its fastest pace in 10 years in May, although export growth slowed more than expected as COVID-19 cases disrupted major ports.

China is due to release consumer and producer price index figures for May on Wednesday.

The yuan market at 0401 GMT:

ONSHORE SPOT:

Item Current Previous Change

PBOC midpoint 6.3909 6.3963 0.08%

Spot yuan 6.3919 6.3964 0.07%

Divergence from 0.02%

midpoint*

Spot change YTD 2.13%

Spot change since 2005 29.48%

revaluation

Key indexes:

Item Current Previous Change

Thomson 97.8 97.81 0.0

Reuters/HKEX

CNH index

Dollar index 90.069 89.988 0.1

*Divergence of the dollar/yuan exchange rate. Negative number indicates that spot yuan is trading stronger than the midpoint. The People's Bank of China (PBOC) allows the exchange rate to rise or fall 2% from official midpoint rate it sets each morning.

OFFSHORE CNH MARKET

Instrument Current Difference

from onshore

Offshore spot yuan * 6.3894 0.04%

Offshore 6.5455 -2.36%

non-deliverable

forwards **

*Premium for offshore spot over onshore

**Figure reflects difference from PBOC's official midpoint, since non-deliverable forwards are settled against the midpoint..

(Reporting by Andrew Galbraith; Additional reporting by Xiao Han in Beijing; Editing by Jacqueline Wong)