Filing Details

The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

CUSIP number 74841Q 100 has been assigned to the American Depositary Shares (ADSs) of the issuer, which are quoted on the Nasdaq Global Market under the symbol QH. Each ADS represents one Class A ordinary share of the issuer. No CUSIP number has been assigned to ordinary shares of the issuer.

Names of Reporting Persons.

Leslie Yu

Check the Appropriate Box if a Member of a Group (See Instructions).

(a)  ☐        (b)  ☐

SEC Use Only

Citizenship or Place of Organization

New Zealand

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With

Sole Voting Power

6,296,630 Class B ordinary shares and 1,458,192 Class A ordinary shares (See Item 4)

Shared Voting Power

0

Sole Dispositive Power

6,296,630 Class B ordinary shares and 1,458,192 Class A ordinary shares (See Item 4)

Shared Dispositive Power

0

Aggregate Amount Beneficially Owned by Each Reporting Person

6,296,630 Class B ordinary shares and 1,458,192 Class A ordinary shares (See Item 4)

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

☐

Percent of Class Represented by Amount in Row (9)

14.8% (assuming conversion of all outstanding Class B ordinary shares into the same number of Class A ordinary shares) (See Item 4)

Type of Reporting Person (See Instructions)

IN

Names of Reporting Persons.

LESYU Investments Limited

Check the Appropriate Box if a Member of a Group (See Instructions).

(a)  ☐        (b)  ☐

SEC Use Only

Citizenship or Place of Organization

British Virgin Islands

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With

Sole Voting Power

6,296,630 Class B ordinary shares (See Item 4)

Shared Voting Power

0

Sole Dispositive Power

6,296,630 Class B ordinary shares (See Item 4)

Shared Dispositive Power

0

Aggregate Amount Beneficially Owned by Each Reporting Person

6,296,630 Class B ordinary shares (See Item 4)

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

☐

Percent of Class Represented by Amount in Row (9)

12.0% (assuming conversion of all outstanding Class B ordinary shares into the same number of Class A ordinary shares) (See Item 4)

Type of Reporting Person (See Instructions)

CO

Name of Issuer:

Address of Issuers Principal Executive Offices:

Name of Person Filing:

Address of Principal Business Office, or, if none, Residence:

Citizenship:

Title of Class of Securities:

CUSIP No.:

If this statement is filed pursuant to §§ 240.13d-1(b), or 240.13d -2(b) or (c), check whether the persons filing is a:

Ownership

Reporting person

Amount

beneficially

owned:

Percent of

class⁽¹⁾

Sole power to

vote or direct

the vote:

Shared

power to

vote or to

direct the

vote:

Sole power to
dispose or to

direct the
disposition of:

Shared power

to dispose or to

direct the
disposition of:

Leslie Yu

The percentage of the class of securities beneficially owned by each reporting person is calculated based on 46,097,880 Class A Ordinary Shares issued as of December 31, 2020.

1,458,192 Class A ordinary shares issuable to Mr. Leslie Yu upon exercise of the share options granted under our 2019 Plan that have vested or are expected to vest within 60 days after December 31, 2020, which are held by The Core Trust Company Limited, as the trustee of share awards.

The 1,458,192 Class A Ordinary Shares held by the reporting person represent 2.8% of the Issuers outstanding ordinary shares as a single class, being the sum of 46,097,880 Class A Ordinary Shares and 6,296,630 Class B ordinary shares outstanding as of December 31, 2020, assuming conversion of all Class B Ordinary Shares into Class A Ordinary Shares. Each Class A Ordinary Share is entitled to one vote, and each Class B Ordinary Share is entitled to fifteen votes and is convertible into one Class A Ordinary Share.

Reporting person

Amount
beneficially
owned:

Percent of
class⁽¹⁾:

Sole power to vote
or direct the vote:

Shared
power to
vote or to
direct the
vote:

Sole power to
dispose or to
direct the
disposition of:

Shared power
to dispose or
to direct the
disposition of:

Leslie Yu

LESYU Investments Limited

The percentage of the class of securities beneficially owned by each reporting person is calculated based on 6,296,630 Class B Ordinary Shares outstanding as of December 31, 2020.

6,296,630 Class B Ordinary Shares held by LESYU Investments Limited. Mr. Leslie Yu is the beneficial owner and sole director of LESYU Investments Limited.

The 6,296,630 Class B Ordinary Shares held by the reporting persons represent 12.0% of the Issuers outstanding ordinary shares as a single class, being the sum of 46,097,880 Class A Ordinary Shares and 6,296,630 Class B ordinary shares outstanding as of December 31, 2020, assuming conversion of all Class B Ordinary Shares into Class A Ordinary Shares. Based on the same assumption, the 6,296,630 Class B Ordinary Shares and 1,458,192 Class A Ordinary Shares combined beneficially owned by Mr. Leslie Yu represent 14.8% of the Issuers outstanding ordinary shares as a single class. Each Class A Ordinary Share is entitled to one vote, and each Class B Ordinary Share is entitled to fifteen votes and is convertible into one Class A Ordinary Share.

Ownership of Five Percent or Less of a Class

Ownership of More than Five Percent on Behalf of Another Person

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person

Identification and Classification of Members of the Group

Notice of Dissolution of Group

Certifications